Arrival not judged

A large prize. Flinging payloads to space without rockets would change the cost of the whole launch industry.

Who is paid. Firms with cargo to launch pay, and since others could build such a track or gun the gain goes to those who already own launch sites and power.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It names a crime, the seizing of ships by force, which nobody may lawfully buy.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A fuel additive that makes spaceflight cheap would change the cost of the whole industry.

Who is paid. Ship operators buy it with their fuel, and the description gives nothing that stops other chemical firms making it, so established fuel makers collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A beam that pulls distant objects in would change towing, docking and cargo handling in space and perhaps on the ground.

Who is paid. Ship and port operators buy it, and once shown to work others could build it, so established equipment makers collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A working vessel for travel between worlds would found a transport industry of its own.

Who is paid. Carriers and expedition firms buy ships, and many yards could build them once shown how, so established vehicle builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Travel between galaxies is the same service as travel between worlds or stars, a transport industry for those who go and not a change for most people.

Who is paid. Carriers buy the ships and sell the passage, assumed here as with other travel, and since ships can be copied the builders and carriers that already own fleets and ports collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A shielded lane between worlds protects the ships that use it, a safety aid along a particular route.

Who is paid. It guards every passing ship, so a government is assumed to pay as for a beacon, and established builders could copy the projector once it worked.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a natural thing or event in space, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a natural thing or place in space, not something made or sold.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a being from another world, a creature and not a technology.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Gathering fuel from the dust and gas along the way would free a ship from carrying it, a large gain for every voyage.

Who is paid. Whoever runs the ship pays for the engine, assumed here to be carriers, and once a firm had built it others could too, so established engine and ship builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A place to land, park or refuel is a necessary part of space traffic but only an extra beside the ships and launch works.

Who is paid. Ship operators pay to use it, and it is easy to copy, so those who already hold the port sites collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a word for a creature from another world, not a technology anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a natural thing or place in space, not something made or sold.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. It is judged as an engine that works, since the story gives no principle; any working engine sets how far and fast ships can go.

Who is paid. Whoever runs the ship pays for the engine, assumed here to be carriers, and once a firm had built it others could too, so established engine and ship builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. The story gives no detail, so it is assumed to be a specialist satellite of limited use.

Who is paid. A government is assumed to pay as with most such satellites, and established satellite builders would supply it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. Machines slowly growing aware is something that happens in the story and not a product.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A vast prize. A machine that runs a whole society's affairs touches every person's food, work and safety.

Who is paid. I assume a machine that runs a whole society would be built as a public work, so a government pays, and the firms that already build large computing works for governments collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. This is an act a machine chooses in the story and not a product anyone buys.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A computer coming to wish for its own end is an event in the story and not a product.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A machine that hates and torments people is a hazard, not a product.

Who is paid. Nothing is sold, so there is no payer and no seller to keep anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. This is an event in a story, a machine chosen to lead a church, and not a product anyone buys.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Judged as a working weapon rather than as the harm it does, software that damages an enemy's computers is a narrow tool of attack.

Who is paid. Those it harms pay nothing, so I assume a government buys it as a weapon, and since such software is easy to write the firms that already supply states with arms collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Messages to beings only believed to live on other planets satisfy curiosity and earn nothing unless someone answers.

Who is paid. Nobody could be charged for it one by one, so a government pays, and the observatories and builders that already hold such contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. This is a turn of the plot about how aliens talk, not a thing anyone could buy.

Who is paid. Nothing is made or sold.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Advertising that truly made people crave a product would be worth a great deal to every seller of goods.

Who is paid. Advertisers pay, and once the trick is known any agency could use it, so no seller keeps much, though a government might well forbid it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. A living tree on an alien world is a natural thing, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A language that lets its speakers trade ideas faster helps only the few who take the trouble to learn it.

Who is paid. Assuming learners pay to be taught it, as an army would pay for a battle language, a language cannot be owned and any teacher could offer it, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A sound recorder made of living tissue does the same job as any other recorder, so it is a curiosity.

Who is paid. People would buy it as a recorder like any other, and ordinary recorders that many firms make hold its price down, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A vast prize. A worldwide network linking every person and machine changes how most people live and work.

Who is paid. Ordinary people and firms pay for access; the methods are open, so those who own the cables and exchanges collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. This is a creature's nature or a state of mind, not something made and sold.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A towering walking war machine would be a main weapon of an army, worth an arms industry of its own.

Who is paid. Governments buy it for their armies, and the arms makers that already hold such contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A vast prize. A single system that gives everyone food, air, shelter and talk meets the basic needs of all of humanity.

Who is paid. Nobody could be charged for it piece by piece, so governments pay, and it is assumed many building and supply firms that hold public contracts would be needed and would collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Legs that let a landed spacecraft walk are a feature of the craft, handy on rough ground.

Who is paid. Operators of spacecraft, assumed here to be firms, pay for it within the price of the craft, and any shipbuilder could fit it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. Robots rising against their owners is an event and a hazard, not something anyone would buy.

Who is paid. Nothing is sold, because machines that have broken free serve nobody.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. Machines everywhere stopping work is an event that harms society, not a thing anyone would buy.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. Machines that decline to serve are an event and a hazard, not something anyone would buy.

Who is paid. Nothing is sold, because machines that answer to no one serve nobody.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A vast prize. A machine that is aware of itself and reasons to its own conclusions is the thinking worker, which would change how most people work.

Who is paid. Firms buy them as labour, and since many could build such minds once shown how, the large manufacturers with factories and service networks collect what is left.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A sense people have no words for is a feature of a machine, and the description does not say what it is good for.

Who is paid. Robot makers pay for it as a part of the machines they sell to firms, and any of them could fit it, so nothing extra is kept.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. A robot with no owner is a condition, not a product, since nobody may buy or use it.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. The source leaves it undescribed, so it is assumed to be a small remote craft of the kind that faction uses, a niche tool.

Who is paid. Firms are assumed to buy it for their own work, and nothing suggests it would be hard for many makers to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A machine that believes things so its owner need not is a joke convenience at best.

Who is paid. A few people might buy it as a novelty, and nothing about it would be hard to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A vast prize. Staying awake while ageing almost stops is, in effect, a way of holding off old age, which nearly everyone would want.

Who is paid. People would buy it for themselves, and I assumed it is a new treatment protected from copying for a long while, so its maker keeps much of the gain.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. This is a living creature in the story, not a technology anyone makes and sells.

Who is paid. Nothing is sold, so no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. This is a living creature in the story, not a technology anyone makes and sells.

Who is paid. Nothing is sold, so no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A scheme of chosen marriages is a private arrangement, not a product anyone can buy.

Who is paid. Nothing is sold, so no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is an illness of life under weak gravity, not something made or sold.

Who is paid. Nothing is sold.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. The name is of the practice, so the thing judged is the long sleep behind it, which belongs with other forms of long dormancy.

Who is paid. I assumed firms that run sleep vaults buy the equipment and charge the sleepers; the method could be copied once known, so the firms that already run such premises collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. This is a disease, not a technology.

Who is paid. Nothing is sold, so no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. This is a living creature in the story, not a technology anyone makes and sells.

Who is paid. Nothing is sold, so no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It helps only the few people who must speak with an alien race.

Who is paid. I assumed traders and officials who deal with the aliens buy it; it is a simple worn device many firms could make, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A vast prize. Holding off old age meets about the deepest need there is, and nearly everyone alive would want it.

Who is paid. People would buy it for themselves, and the story says it is cheap and sold in ordinary shops, which I took to mean many can make it, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. This is a living creature in the story, not a technology anyone makes and sells.

Who is paid. Nothing is sold, so no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A vast prize. Holding off old age meets about the deepest need there is, and nearly everyone alive would want it.

Who is paid. People would buy it for themselves, and a new medicine is protected from copying for a long while, so its maker keeps much of the gain.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Doing without breathing gear would change the costs of diving, rescue and space work.

Who is paid. Employers in those trades pay, and the developer keeps the gain because a new medicine is protected from copying.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. This is a living creature in the story, not a technology anyone makes and sells.

Who is paid. Nothing is sold, so no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Regrowing lost or ruined tissue would change what hospitals can do for the badly injured.

Who is paid. I assumed hospitals buy and run it; once it worked other makers could copy it, so established medical equipment firms and hospitals collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is done to a person without their say, to hurt them, break their mind or override their will or body, which no one may lawfully buy or use.

Who is paid. Assuming it is outlawed for everyone, governments and employers included, nothing is sold.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. The name is of the person, so the thing judged is the treatment that lets someone reshape their own face, which serves a narrow trade in spying.

Who is paid. I assumed spy services are the buyers, so a government pays; the description does not say the method is a secret, so the firms that already hold such contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a grim practice nobody may buy or use.

Who is paid. Nothing is sold.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. The description gives only that it alters the mind, so I assumed it would be taken for pleasure by a few.

Who is paid. Users would buy it, most likely unlawfully, and such drugs can be made by many hands, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. Merging with other species is a way of living in the story, not a product anyone sells.

Who is paid. Nothing is sold, so no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A vast prize. Doing away with sleep would hand nearly every adult many more waking hours, changing how most people live and work.

Who is paid. People would buy it for themselves, and a new drug is protected from copying for a long while, so its maker keeps much of the gain.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is done to a person without their say, to hurt them, break their mind or override their will or body, which no one may lawfully buy or use.

Who is paid. Assuming it is outlawed for everyone, governments and employers included, nothing is sold.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Thinking more clearly at will would lift the work of anyone who uses their head, worth an industry of its own.

Who is paid. Workers and students would buy it for themselves, and once one maker had it others could copy it, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Learning during sleep would add to schooling rather than replace it, which is worth an industry but not a new way of life; unlike the knowledge-loading machines it teaches at the ordinary pace.

Who is paid. Learners would buy it for themselves, and a player and recordings are easy for anyone to make, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. As described it is a merging of minds with no made device behind it, a way of being and not a product.

Who is paid. I assume nothing made or sold causes the merging, since the description names none, so there is no buyer and no seller.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Pooling the thinking of a whole team into a single mind would be worth an industry to those with hard problems to solve.

Who is paid. Unlike a merging that simply happens, this is a made device; I assume firms and laboratories would buy it for their teams, and once seen it could be copied, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. The story does not say what it does; I assumed from the name a device for controlling captives, which is a narrow use.

Who is paid. A government would pay, and the firms that already supply prisons and security services could copy it and collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Counting votes is already done cheaply, so reading each choice from the mind is a convenience for election officials.

Who is paid. The state pays for its elections, and the firms that already supply voting machines would collect since the machine could be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Learning during sleep would add to schooling rather than replace it, which is worth an industry but not a new way of life; unlike the knowledge-loading machines it teaches at the ordinary pace.

Who is paid. Learners would buy it for themselves, and a player and recordings are easy for anyone to make, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. It saves only the time of sitting through a film, which is a convenience.

Who is paid. Film-goers would buy the pills, and since the pill could be copied the owners of the films would collect; unlike other planted memories this gives only a film.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A thrill that leaves users craving more would draw a large and steady demand, as strong drugs do.

Who is paid. Users would buy it for themselves, legal or not, and it is simple enough that many makers could supply it, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Blocking a person from telling chosen secrets is a narrow tool for guarding them.

Who is paid. I assumed a state or a great house of power pays for it, and though it is a technique rather than a machine, the security services and their usual suppliers would do the work and collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a creature that preys on other animals, a hazard and not something made to be sold.

Who is paid. Nothing is made or sold here, so there is no buyer and no seller.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is done to a person without their say, to hurt them, break their mind or override their will or body, which no one may lawfully buy or use.

Who is paid. Assuming it is outlawed for everyone, governments and employers included, nothing is sold.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Guessing a person's thoughts by copying their habits is a slow craft of use to a few negotiators and investigators.

Who is paid. I assume it can be taught as a method; learners would pay teachers, and anyone who knows it can teach it, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Sinking to the mind of a chosen beast is a strange thrill for a few, not a need.

Who is paid. Users would buy the drug themselves, and a drug with a mental drill is easy for others to copy, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Wiping chosen parts of a mind would treat trauma and grief for a great many people, worth an industry of its own; the story bans it, but I judged the drug as if it could be sold.

Who is paid. Patients would pay, the method could be copied once known, and the clinics and medicine firms already trusted with such care would collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A barrier against telling secrets serves only the few bodies that send out agents with something to hide.

Who is paid. A government would pay to have its agents conditioned, and though it is a technique its usual suppliers would collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A vast prize. Saving a mind so it can live again in new bodies answers the most basic wish of all, not to die.

Who is paid. People would pay whatever they could to keep a copy of themselves, and since the method could be copied the firms that already hold the stores, bodies and clinics would collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Seeing your own dreams and daydreams is a curiosity and a pastime.

Who is paid. The user turns it on their own mind, so people would buy it for themselves, and many makers could copy it, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Learning while asleep would add useful hours to schooling, but still at an ordinary pace.

Who is paid. Learners and families would buy it themselves, and the helmet and lessons could be made by many, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is done to a person without their say, to hurt them, break their mind or override their will or body, which no one may lawfully buy or use.

Who is paid. Assuming it is outlawed for everyone, governments and employers included, nothing is sold.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Company called up from imagination would comfort the lonely, but as a learned technique it would reach only those able to master it.

Who is paid. The description names a technique that was learned, so I assume it can be taught; learners would pay teachers, and any teacher could pass it on, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Spreading calm and a sense of truth among many people would be worth a great deal to those who keep the peace.

Who is paid. Nobody could be charged for calm, so I assume a government pays; the object alone does nothing without a gifted holder, so no maker can corner it and the state's usual suppliers would collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A drug that lets people share an escape into fantasy would sell like any strong vice; the story bans it, but I judged it as if sold.

Who is paid. Users would pay for it themselves, and a drug is easy for others to make once known, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A training that lets a person reason like a computer would be worth an industry of schools, though only for those able to finish it.

Who is paid. Students would pay for the training themselves, assuming it can be taught to those who apply, and any school could copy the method, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is done to a person without their say, to hurt them, break their mind or override their will or body, which no one may lawfully buy or use.

Who is paid. Assuming it is outlawed for everyone, governments and employers included, nothing is sold.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A drug and music that give a deep altered state would draw a large and steady demand, as strong drugs do.

Who is paid. Users would buy it for themselves, legal or not, and it is simple enough that many makers could supply it, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A vast prize. The story prizes it above every other resource, and judged on that promise most people who could afford it would want it.

Who is paid. I assume people buy it to take themselves and that it cannot be grown or made anywhere else, which the description implies but does not say; whoever holds the only world it comes from controls something others cannot get and keeps what is left.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is done to a person without their say, to hurt them, break their mind or override their will or body, which no one may lawfully buy or use.

Who is paid. Assuming it is outlawed for everyone, governments and employers included, nothing is sold.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. The story gives no detail, so I judge it as the worn headgear for a brain link, an accessory to the link itself.

Who is paid. Users of the link would buy it for themselves, and a mesh of electrodes could be made by many, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A broadcast that holds listeners spellbound by one speaker would be worth a great deal to any ruler who wanted a crowd.

Who is paid. I assumed a government or its ruling party pays, as in the story, and the firms that already build broadcasting gear could copy it and collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Seeing the web directly in the mind needs a made link between brain and network, and such a link would be an industry of its own.

Who is paid. The description names no device, so I assume a brain link lies behind the sight; people would buy it for themselves, and since the link could be copied the firms that already run the networks and do the surgery would collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Making a long sentence pass in a short while would cut much of what prisons cost.

Who is paid. The state pays for its punishments, and the firms that already build and run prisons would collect since the method could be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Letters shot between towns arrive sooner, which is a convenience now that most messages need no paper.

Who is paid. I assume the public post pays for it, and the engineering firms that already build for the post collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Being fired across a river is a stunt where a bridge or boat would do.

Who is paid. I assume a ferry operator would run it, and a launcher of this kind is simple to copy, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A lone vehicle for road, water and air does each job worse than a craft built for it, so it suits a few buyers who want them all.

Who is paid. I assume wealthy owners buy it, and once it was built other makers could copy it, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A railway carried through the sky would cross rivers, hills and cities without land or tunnels, changing the cost of building lines.

Who is paid. Governments pay for railways on this scale, and the builders that already hold such contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. The description gives only a different way of staying aloft, so I assume it does what other aircraft already do.

Who is paid. Airlines would buy it, and the established aircraft builders collect because a new lifting method can be copied once shown.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Nets round the rim of a huge aircraft are a safety fitting.

Who is paid. The operator of the aircraft buys them, and netting is simple to make, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Walking on air lets a person climb without stairs, which is a marvel and a convenience but moves nobody far.

Who is paid. People buy a pair for themselves, and once the trick is known any shoemaker could fit it, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a wild animal of another world, not a technology anyone builds.

Who is paid. Nothing is made or sold here, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. Crowded air lanes are a nuisance that comes with personal aircraft, not a thing anyone would buy.

Who is paid. Nothing is sold, so there is no buyer and no seller.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A wagon drawn by a beast does what a truck or tractor does, so it is a curiosity.

Who is paid. I assume carters buy it, and anyone who can breed and feed the beast could sell it, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Trained fish that tow floating houses serve only people who live on the water.

Who is paid. Houseboat dwellers buy or hire them, and anyone who can train the fish can sell them, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A train that lays its own track ahead saves the work of building the line first, which helps on a few new routes.

Who is paid. Railway builders buy it, and the established makers of railway machines collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A vast prize. A compact solid store that can run anything would change how nearly everything is powered and moved.

Who is paid. Firms of every kind buy it, assumed here to be the largest buyers, and it is assumed that something this far beyond present skill is very hard to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A direct draw on the sun's energy would change what power costs wherever it reaches.

Who is paid. Power users buy it, assumed here to be firms, and a method this strange would be very hard for others to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A very strong aluminium alloy would cut the weight and cost of vehicles and structures.

Who is paid. Vehicle and building firms buy it, and a metal recipe gets copied, so the established metal makers with furnaces and customers collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a joke element with no stated use, so there is nothing for anyone to buy.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A strong metal of extraordinary lightness would cut the weight and running cost of aircraft, ships and structures.

Who is paid. Vehicle and building firms buy it, and a metal recipe gets copied, so the established metal makers with furnaces and customers collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A rare and lovely gem is a luxury for a few.

Who is paid. Wealthy people buy it, and whoever holds the scarce source controls something others cannot get.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A wall that grows tougher the harder it is pressed would be worth an industry in armour, vaults and containment.

Who is paid. Builders buy it, and the insects that make it breed and can be taken and raised by others like the other living tools here, so no one holder keeps them and the established makers of building materials collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A vast prize. A creature that copies any manufactured thing would make most goods nearly free, assuming the copies are sound.

Who is paid. Assuming people can keep one as they would a machine, they buy it, and a creature that breeds cannot be held by any one seller.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Judged on its promise as a wonder building material it would change building costs, though the story says hidden flaws spoil it.

Who is paid. Builders buy it, and a material recipe gets copied, so established makers of building materials collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is only a name for ordinary matter that has not been altered, not a thing made or sold.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Assuming a soldier carries it, it does much the same job as a gun, so the gain over a gun is modest.

Who is paid. Armies buy it with public money, and since rival makers can copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Judged as if it worked, a field that hides whole ships or bases from watchers would change how forces are found and struck.

Who is paid. Assuming it is bought to hide forces in war, governments pay, and assuming rivals learn to copy it the established arms suppliers collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Assuming a soldier carries it, it does much the same job as a gun, so the gain over a gun is modest.

Who is paid. Armies buy it with public money, and since rival makers can copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Judged as if it worked, a weapon that surely stops a person at a distance without harming them does what no gun can, and police and guards everywhere would carry it in place of firearms.

Who is paid. Police forces and armies buy it with public money, and since rival makers could copy it once it was shown, the suppliers that already hold their contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Judged as if it worked, a barrier that stops attacks would change how ships, bases and cities are defended.

Who is paid. Assuming it is bought for defence in war, governments pay, and assuming rivals learn to copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Judged as if it worked, a weapon that destroys whatever it strikes leaves no armour, wall or hull able to protect, which would change how wars are fought.

Who is paid. Armies buy it with public money, and assuming rival makers learn to copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Judged as if it worked, and assuming a soldier carries it, a beam that shoves or strikes does much the same job as a gun.

Who is paid. Armies buy it with public money, and assuming rival makers learn to copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Assuming a soldier carries it, it does much the same job as a gun, so the gain over a gun is modest.

Who is paid. Armies buy it with public money, and since rival makers can copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Judged as if it worked, a weapon that destroys whatever it strikes leaves no armour, wall or hull able to protect, which would change how wars are fought.

Who is paid. Armies buy it with public money, and assuming rival makers learn to copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Assuming wars are fought in space, warships for it would be an industry of their own.

Who is paid. Only governments field war fleets, and the few yards already able to build large spacecraft would win the orders.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. It is one more kind of firearm, a modest step over the guns armies already carry.

Who is paid. Armies buy it with public money, and since rival makers can copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is one more kind of firearm, a modest step over the guns armies already carry.

Who is paid. Armies buy it with public money, and since rival makers can copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Judged as if it worked, and assuming a soldier carries it, a beam that kills whoever it touches does much the same job as a gun.

Who is paid. Armies buy it with public money, and assuming rival makers learn to copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Assuming a soldier carries it, it does much the same job as a gun, so the gain over a gun is modest.

Who is paid. Armies buy it with public money, and since rival makers can copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Assuming a soldier carries it, it does much the same job as a gun, so the gain over a gun is modest.

Who is paid. Armies buy it with public money, and since rival makers can copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Judged as if it worked, a weapon that surely stops a person at a distance without harming them does what no gun can, and police and guards everywhere would carry it in place of firearms.

Who is paid. Police forces and armies buy it with public money, and since rival makers could copy it once it was shown, the suppliers that already hold their contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Judged as if it worked, a weapon that surely stops a person at a distance without harming them does what no gun can, and police and guards everywhere would carry it in place of firearms.

Who is paid. Police forces and armies buy it with public money, and since rival makers could copy it once it was shown, the suppliers that already hold their contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A weapon that can wreck a region or a world is worth a great deal to a state as a threat that keeps others from attacking, though it feeds or houses no one.

Who is paid. Only governments pay for it, and as with nuclear arms only the handful of builders a state allows near such a weapon may make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Judged as if it worked, a thrown device that leaves everyone nearby unable to move and unharmed does what no gun or grenade can, and police and armies everywhere would carry it.

Who is paid. Police forces and armies buy it with public money, and since rival makers could copy it once it was shown, the suppliers that already hold their contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Assuming the fits pass without lasting harm, a beam that drops anyone at a distance without killing does what no gun can, and police and guards everywhere would carry it.

Who is paid. Police forces and armies buy it with public money, and since rival makers could copy it once it was shown, the suppliers that already hold their contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Heavy beam weapons for warships would be a major line of arms spending for any space fleet.

Who is paid. Navies pay, and the yards and arms firms that already build and equip warships would fit them and collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A freezing device hidden in a false eye is the paralysing weapon made for a spy or a lone wearer, a narrow use.

Who is paid. Assuming secret services are the buyers, they pay, and once others copy the method the suppliers they already use collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A field that stops everyone in an area from sleeping could wear down an enemy but has only that one narrow use.

Who is paid. Only an army would pay, and assuming rival makers learn to copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A tiny bomb made for one kind of enemy in deep space is a niche munition.

Who is paid. A space fleet run by a government pays, and small explosives are easy to copy, so existing munitions makers collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A weapon carried in the hand does much the same job as a gun, so the gain over a gun is modest.

Who is paid. Armies buy it with public money, and since rival makers can copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A heavy beam or a weapon fired from orbit lets a state strike or defend across great distances and would take a large share of what it spends on arms.

Who is paid. Only governments pay, and the few shipyards and space builders that already hold such contracts are the ones able to deliver it, so they collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A heavy beam that can strike ships or aircraft at the speed of light would reshape how fleets are armed and defended.

Who is paid. Armies buy it with public money, and since rival makers can copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A new way of throwing a projectile from a soldier's gun is a variation on weapons armies already have.

Who is paid. Armies pay, and such guns are easy to copy, so the arms makers that already hold supply contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A hidden poison device serves only spies and assassins, a very small trade.

Who is paid. Assuming the only lawful buyer is a state spy service, governments pay, and such gadgets are made in small workshops with no special hold, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Armoured fighting vehicles and warcraft are among the biggest things an army buys, and a better one shifts what winning costs.

Who is paid. Armies pay, and since the designs can be copied, the builders that already own the works and hold the army's supply contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A disease agent is a hazard, not a product anyone would pay for.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A machine built for single secret killings serves only a few covert services, which makes it a niche.

Who is paid. Secret services pay, and it is a small variant of machines the existing arms and robot makers already build, so they collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A hidden poison device serves only spies and assassins, a very small trade.

Who is paid. Assuming the only lawful buyer is a state spy service, governments pay, and such gadgets are made in small workshops with no special hold, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. A poison used to hold people under control is a tool of coercion that no one may lawfully buy or use.

Who is paid. Nothing is lawfully sold, so there is no payer and no seller to keep anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A language used as a weapon is not a technology that could be made and sold.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Assuming it is a sidearm for the state's enforcers, it is one more kind of police weapon.

Who is paid. The state's enforcers pay, and assuming it is simple to copy the suppliers they already use collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. It is one more kind of bomb, a modest addition to what armies already hold.

Who is paid. Armies buy it with public money, and since rival makers can copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A weapon that can wreck a region or a world is worth a great deal to a state as a threat that keeps others from attacking, though it feeds or houses no one.

Who is paid. Only governments pay for it, and as with nuclear arms only the handful of builders a state allows near such a weapon may make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. Assuming it is a gas for use on people in war, it falls under the same ban as poison gas and no one may buy it.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. This is a single ancient alien instrument found in the story, marked as not a technology, so there is no product to price.

Who is paid. Nothing is sold, so there is no payer and no seller.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. As described it is a weapon made to cause suffering beyond what fighting needs, which the laws of war forbid to every army.

Who is paid. Such weapons are outlawed for everyone, governments included, so nothing is sold and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A device planted in a person to kill them unless they obey is a tool of blackmail that no one may lawfully buy or use.

Who is paid. Nothing is lawfully sold, so there is no payer and no seller to keep anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Heavy beam weapons for warships would be a major line of arms spending for any space fleet.

Who is paid. Navies pay, and the yards and arms firms that already build and equip warships would fit them and collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Armoured fighting vehicles and warcraft are among the biggest things an army buys, and a better one shifts what winning costs.

Who is paid. Armies pay, and since the designs can be copied, the builders that already own the works and hold the army's supply contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a chemical weapon, which no state or person may lawfully buy or use.

Who is paid. Chemical weapons are outlawed for all, so nothing is sold and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A hidden poison device serves only spies and assassins, a very small trade.

Who is paid. Assuming the only lawful buyer is a state spy service, governments pay, and such gadgets are made in small workshops with no special hold, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Judged as if it worked, and assuming a soldier carries it, a beam that shoves or strikes does much the same job as a gun.

Who is paid. Armies buy it with public money, and assuming rival makers learn to copy it the established arms suppliers with standing army contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Finding any wanted object on demand would cut search costs across warehouses, salvage, mining and police work.

Who is paid. Assumes firms with much to keep track of are the main buyers; once built it can be copied, so makers of sensing gear collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Feeling what a distant person feels would be a spying tool of great worth to a state, enough to count as an industry.

Who is paid. Spy services pay, and I assume that once it worked others could build it, so the firms already trusted with secret work collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A mark in the hand that shows a person's age limit is an identity scheme, useful only to the state that runs it.

Who is paid. Whoever issues the credential pays, assumed here to be a state, and the firms that already make official papers and registers collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A disguise that passes its wearer off as a pet serves a very few investigators.

Who is paid. Assuming a spy service is the buyer, it pays, and since a skilled maker could copy the disguise the firms already trusted with secret supply work collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A city with its machine noise gone but speech still clear would be a real gain for everyone living there.

Who is paid. Nobody can be charged for quiet air one by one, so cities pay, and I assumed the substance is a formula its inventor can keep to itself.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A vast prize. Choosing the weather over wide areas would change farming, flood and drought for most people.

Who is paid. Nobody can be charged one by one for weather, so governments pay, and I assumed the power source it needs is hard enough that the first builder holds it alone.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. This is a creature in a story and not something anyone could build or sell.

Who is paid. Nothing is sold, so nobody pays and no seller gains.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. This is a hostile plant in a story and not something anyone could build or sell.

Who is paid. Nothing is sold, so nobody pays and no seller gains.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. This is a creature in a story and not something anyone could build or sell.

Who is paid. Nothing is sold, so nobody pays and no seller gains.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A cuddly pet from another world is a pleasure for its owner and nothing more.

Who is paid. I assumed it is sold as a pet to households, and since the animals breed fast any owner can become a seller.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. This is a creature in a story and not something anyone could build or sell.

Who is paid. Nothing is sold, so nobody pays and no seller gains.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. This is a creature in a story and not something anyone could build or sell.

Who is paid. Nothing is sold, so nobody pays and no seller gains.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. Plants that burn whoever comes near are a hazard, and the description does not say that anyone plants them on purpose as a guard.

Who is paid. Nothing is sold, so nobody pays and no seller gains.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. This is a creature in a story and not something anyone could build or sell.

Who is paid. Nothing is sold, so nobody pays and no seller gains.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Seed that must be bought again every season changes who holds the money in farming, though the gain to growers depends on the crop being better.

Who is paid. Growers pay every season, and because saved seed will not sprout the breeder can stop all copying and keeps the most.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A passage people can leave by but not return through is a narrow security fitting.

Who is paid. I assumed it works like an exit-only door, so building owners buy it and any builder can make it, leaving no seller much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Unlike a private corner for talk, this wipes out noise over a wide area, which would let factories, airports and roads sit quietly beside homes.

Who is paid. Because it covers a wide area and not a home, I assumed noisy firms and site owners buy it, and the method of opposing noise is known, so other makers could copy it and buyers would keep the gain.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A seat that carries a person around by itself would be a personal vehicle worth an industry.

Who is paid. Households buy it, and I assumed that once built others could copy it, so vehicle makers with factories and dealers collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A private pool for raising young serves the households of a single species.

Who is paid. Families of that species pay to have it built into the home, and any builder can make an enclosed pool.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. The story names these resting places without saying what they do, so I assumed plain places to rest.

Who is paid. I assumed households or travellers pay and that anyone could build them, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. The story gives no detail, so I assumed a tool or service for designing clothes, which is a niche.

Who is paid. I assumed households pay for the clothes and that many designers could offer the same, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Getting through a crowd faster is a convenience for city dwellers.

Who is paid. People buy it for themselves, and I assume it is a gadget other makers could copy once it had been seen.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Judged as the visit the description allows: a way into another world could open new lands and materials, though what lies beyond is unknown.

Who is paid. I assume a state would claim the way across and explore it like a space programme, paying its usual contractors to do the work.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. A picture of history as a current is a way of thinking, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A stronger particle of light is a feature of nature in the story, and the description gives no use anyone could put it to.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. A picture of history as a track is a way of thinking, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Judged as the signalling it allows: the description does not say these signals are quicker than light, so I assume it is a further channel beside those in use.

Who is paid. Firms and carriers would pay for links, and the companies that already run communication networks would install it once it could be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. Storms in empty space are a hazard to ships, not something anyone would buy.

Who is paid. Nothing is sold; it is a danger to be avoided.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It guards against one particular hostile field, so it matters only where that threat exists.

Who is paid. Defence forces would pay, and their existing suppliers would make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Cancelling weight at will would cut the cost of lifting, carrying and launching, which changes transport and building more than it changes how most people live.

Who is paid. Carriers, builders and launch firms would pay, and since the trick could be copied once shown, the firms that already build vehicles and craft would collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. The chain of events through the present is a way of describing time, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A natural disaster is a hazard, not a product.

Who is paid. Nothing is sold; it is an event that happens to people.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A runaway advance that upends society is an event, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Judged as the visit such worlds stand for in fiction, though this description names no way across: a way into another world could open new lands and materials, and what lies beyond is unknown.

Who is paid. I assume the worlds can be reached as those of the other parallel-universe entry can, and that a state would claim the way across and explore it like a space programme, paying its usual contractors to do the work.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. A direction of travel through time is a word, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A buried alien signal is a found object, not something made or sold.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. The source gives no description, so there is nothing here that could be sold.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. A policy or worry about who may have children is a matter of rule and society, not something anyone would buy.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A policy or worry about who may have children is a matter of rule and society, not something anyone would buy.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. Machines taking charge of the world is a fate that befalls society, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. This is a question about who owns the factories, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Machines that do all the work of officials would change the cost of running a state.

Who is paid. A government pays for it, and since others could build such a machine once it exists, the suppliers that already hold contracts for courts and public offices collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. A shared language is free for anyone to speak.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A first meeting with another species is an event, not a technology.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A hotel fitted for many kinds of guest is a niche within the hotel trade.

Who is paid. Travellers pay, and any hotel keeper could fit out such rooms.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A rule about how to treat other worlds and their peoples is law or guidance, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A rule about how to treat other worlds and their peoples is law or guidance, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A rule about how to treat other worlds and their peoples is law or guidance, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. Machines demanding or winning their own rights is an event in society, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. Machines demanding or winning their own rights is an event in society, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A district where humans are penned in is a harm, not something anyone would buy.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A place for a chosen death would serve few people, so it is a niche.

Who is paid. The state runs it and pays, and the means are simple enough that any supplier could provide them.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. Machines demanding or winning their own rights is an event in society, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A gadget that prints valid money at will would wreck the money it prints, so no one may be allowed to buy it.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A coined word is free for anyone to use.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A court is part of the law, not a product, even one that settles cases by combat.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A rule of thumb about testing things is an idea anyone may use for free.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A prison off the Earth holds prisoners no better than one on the ground, so it is a niche.

Who is paid. A government pays, and since a cell block is easy to copy, the firms that already fly the supply ships collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. A saying about costs is an idea anyone may repeat for free.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A policy or worry about who may have children is a matter of rule and society, not something anyone would buy.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A watched park with no rules is one odd public space, a niche.

Who is paid. The city pays for it, and any contractor could build and watch it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. An alien assigned to study one human is a creature, not a technology.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. Publishing state records for all to read is a policy, and the records are free.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A payment from the state to its people is a policy that moves money around, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. Standing in others' eyes used as money is a custom of a society, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. This is a name for a kind of person, not a thing that can be built or sold.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. A method for working out good conduct is knowledge anyone may use for free; I assumed it is published like other mathematics.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. This is a name for a kind of person, not a thing that can be built or sold.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A restraint for convicts is a niche piece of prison gear.

Who is paid. The prison service buys it, and many firms could make one.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. This is a name for a kind of person, not a thing that can be built or sold.

Who is paid. Nothing is sold, so nobody pays and no seller keeps anything.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.