Exotic physics

A large prize. A flying land that can travel gives its ruler new territory and command over everything below.

Who is paid. A state would pay for it as a public work and a means of rule, and its established builders would be paid to 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.

A large prize. Reaching the past would be worth an industry in study, salvage and statecraft, though few people would need it day to day.

Who is paid. I assume a state would keep for itself a machine that can alter history, so a government pays and its established contractors build it, since others could copy it 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 large prize. Reaching the past would be worth an industry in study, salvage and statecraft, though few people would need it day to day.

Who is paid. I assume a state would keep for itself a machine that can alter history, so a government pays and its established contractors build it, since others could copy it 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. Ending the seasons is a public work whose gain the description does not name, and the story's promise leaves out the harm to coasts and climates.

Who is paid. Only a government could pay for a work on the whole planet, and the firms that already build its great works 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. Reaching other times would be worth an industry in study, salvage and statecraft, though few people would need it day to day.

Who is paid. I assume a state would keep for itself a machine that can alter history, so a government pays and its established contractors build it, since others could copy it 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. Making one person unseen is useful to spies and soldiers and to few honest buyers.

Who is paid. I assume the public would be barred from it, so spy services and armies pay and their usual suppliers provide the treatment.

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 deep into solid ground would change the cost of finding ore, oil and water.

Who is paid. Mining and drilling firms would buy it, and the established makers of survey equipment 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 fairly 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.

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.

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 buy it, and as the substance could be copied once made, 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 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. A deadly cloud in space is a natural disaster, 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. Speeding or slowing one's own time would be worth a great deal to the person who has it.

Who is paid. I assume it is fitted like a medical implant for private buyers, and that once one firm made it others could, so the makers and clinics that already fit implants 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 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.

A large prize. More room inside the same walls would cut the cost of housing where land is scarce.

Who is paid. Households would buy it, and since the coating could be copied the paint and building firms with factories and shops 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 worker who can shrink or grow could repair, inspect and operate where no tool reaches.

Who is paid. I assume hospitals and engineering firms buy it for staff, and a wearable device could be copied by many makers 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 large prize. Cooling at a distance would change refrigeration, firefighting and heavy industry.

Who is paid. Factories, food firms and fire services would buy it, and makers of cooling equipment would sell it once the method was known.

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. Personal flight without wings or fuel would be a new kind of everyday travel, though a narrower use than lifting freight and vehicles.

Who is paid. Ordinary people would buy it as they buy bicycles, and once one firm made it many could, 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 large prize. Gripping and moving things at a distance would change towing, cargo handling, building and rescue.

Who is paid. Ports, builders and ship operators would pay, and with the method open to copying, makers of cranes, tugs and handling gear 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.

A large prize. A beam that takes anything apart would be a decisive weapon and a tool for demolition.

Who is paid. Armies would be the first buyers, and the arms makers that already hold their contracts 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 fairly sure of this one.

A large prize. Personal flight without wings or fuel would be a new kind of everyday travel, though a narrower use than lifting freight and vehicles.

Who is paid. Ordinary people would buy it as they buy bicycles, and once one firm made it many could, 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 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.

A large prize. Judged as the travel it allows: crossing between stars quickly would open new worlds to trade and settlement, an industry of its own, though most people's daily lives would change slowly.

Who is paid. Nobody can own a realm open to every ship, so shipping lines would pay for the ships that enter it, and established shipbuilders who could copy the drive 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. Personal flight without wings or fuel would be a new kind of everyday travel, though a narrower use than lifting freight and vehicles.

Who is paid. Ordinary people would buy it as they buy bicycles, and once one firm made it many could, 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 large prize. Lifting and pushing craft without burning fuel would cut the cost of flight and of reaching space.

Who is paid. Carriers and launch firms would buy it, and since others could copy the device once it is seen, the established builders of aircraft and spacecraft 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. Lifting and pushing craft without burning fuel would cut the cost of flight and of reaching space.

Who is paid. Carriers and launch firms would buy it, and since others could copy the device once it is seen, the established builders of aircraft and spacecraft 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. 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.

A large prize. A pocket device that frees its holder from gravity would give people personal flight, a new industry beside cars.

Who is paid. People would buy it for themselves, and with many makers able to copy a small gadget 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. Cutting the planet loose from the Sun would kill everyone on it, so it is a hazard no one may use.

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.

A large prize. Normal weight on ships and stations would make living and working in space healthy and practical, which is an industry's worth but only for those off Earth.

Who is paid. Ship and station builders would fit it as standard, and with nothing to stop copying, those established 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 small prize. A rod of hardened light is a curiosity unless it is far stronger than ordinary materials, which the description does not say.

Who is paid. I assume it is sold as a material to workshops, and that many makers could produce it once the method was known.

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. Gripping and moving things at a distance would change towing, cargo handling, building and rescue.

Who is paid. Ports, builders and ship operators would pay, and with the method open to copying, makers of cranes, tugs and handling gear 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.

A large prize. A wall nothing can pass would reshape defence, prisons and the guarding of valuable places.

Who is paid. Armies and police would be the main buyers, and with the method copyable among arms makers, the firms already holding such contracts 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 fairly sure of this one.

A small prize. Looking into other dimensions satisfies curiosity and science more than any everyday need.

Who is paid. Public research bodies would pay, and the instrument makers that already supply observatories would build it.

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 only the switch for a force barrier, an accessory to the larger thing.

Who is paid. Whoever buys the barrier gets the key with it, from the same established suppliers.

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 nothing can pass would reshape defence, prisons and the guarding of valuable places.

Who is paid. Armies and police would be the main buyers, and with the method copyable among arms makers, the firms already holding such contracts 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 fairly sure of this one.

A vast prize. Moving people and goods across any distance at once would replace most transport and change where people live and work.

Who is paid. Carriers would buy the machines and charge fares, and since others could build them once shown, the firms that already own stations and routes 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. Measuring gravity is a specialist need of surveyors and navigators.

Who is paid. Survey and navigation firms would buy it, and instruments like this can be made by many workshops, 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.

No prize. A door that lets invaders pour in is a hazard to the people who build it.

Who is paid. Nothing is sold; it is a trap, and no one would knowingly pay for it.

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. Dead ash left after matter is destroyed is a waste product with no use given.

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. Ordinary space is simply where everything already is, 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. Moving distant objects without touching them would change cargo handling, towing and building work.

Who is paid. Ports, builders and ship operators would buy it, and the established makers of heavy equipment 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 fairly 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.

A small prize. Spotting people who move through time matters only to whoever polices time travel.

Who is paid. Governments would buy it, and the firms that already supply their watch and patrol equipment 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. Moving distant objects without touching them would change cargo handling, towing and building work.

Who is paid. Ports, builders and ship operators would buy it, and the established makers of heavy equipment 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 fairly sure of this one.

A large prize. Carving and holding open spaces in rock or sea would change tunnelling and undersea building.

Who is paid. Building and mining firms would buy it, and the established makers of their equipment 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. 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. Judged as the force put to work: carriers, builders and launch firms would pay, and as the trick could be copied, 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.

A large prize. Unlike the working beams, this one is a weapon that drags ships to their ruin, which navies would prize.

Who is paid. Navies would pay, and the arms makers that already supply them would build it once the method was known.

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. Normal weight on ships and stations would make living and working in space healthy and practical, which is an industry's worth but only for those off Earth.

Who is paid. Ship and station builders would fit it as standard, and with nothing to stop copying, those established 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. Crossing between stars quickly would open new worlds to trade and settlement, an industry of its own, though most people's daily lives would change slowly.

Who is paid. Shipping lines and explorers would pay, and once one yard had built the drive others could, so established shipbuilders 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 tiny living world in a laboratory is a research tool and a marvel.

Who is paid. Research bodies would pay, and laboratory equipment makers would build it once the method was published.

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. Lifting and pushing craft without burning fuel would cut the cost of flight and of reaching space.

Who is paid. Carriers and launch firms would buy it, and since others could copy the device once it is seen, the established builders of aircraft and spacecraft 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. Lifting and pushing craft without burning fuel would cut the cost of flight and of reaching space.

Who is paid. Carriers and launch firms would buy it, and since others could copy the device once it is seen, the established builders of aircraft and spacecraft 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 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.

A large prize. Seeing past events as they really happened would settle crimes and disputes and end most secrecy.

Who is paid. Courts and police would pay, assuming private use is restricted, and the firms that already supply them 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. Shrinking goods and people would change the cost of shipping, storage and work inside the body.

Who is paid. Hospitals and carriers would buy the machines, and with many makers able to copy them 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. Unlike the generators, this is a comfort worn by one traveller, a niche piece of crew kit.

Who is paid. Ship operators would issue it to crews, and a belt is simple enough 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 fairly sure of this one.

A large prize. A door to another reality could open new lands and materials, though what lies beyond is unknown.

Who is paid. I assume it would be run like a space programme, with a government paying its usual contractors to build and guard 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. Hearing any past conversation, even without pictures, would transform policing, courts and spying and end privacy.

Who is paid. Police, courts and spy services would be the buyers, and the firms that already supply them would build it once the method was known.

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. Reaching other times would be worth an industry in study, salvage and statecraft, though few people would need it day to day.

Who is paid. I assume a state would keep for itself a machine that can alter history, so a government pays and its established contractors build it, since others could copy it 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. Electron beams exist and are a workshop tool; the story's use against a store of mirror matter is a rare job.

Who is paid. Laboratories and factories buy them, and many firms can make one, 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.

No prize. Beings and objects from another realm are not a made thing.

Who is paid. Nothing is sold, since these are creatures and things found, not products.

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 globe-circling beam of antimatter has no everyday use, so it is judged as a single weapon or public work.

Who is paid. Only a government could pay for something so large, and the firms that already build its great works 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. Ships that outrun light would open other stars to trade and settlement, an industry of its own, though most people would never ride one. It is named as an idea rather than a device, so it is judged as the working thing it describes.

Who is paid. Shipping lines and explorers would buy the engines, and once the trick is known any shipyard could fit it, so the established 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 fairly sure of this one.

A small prize. A tiny cosmos in a laboratory is a tool for study, of interest to scientists more than to buyers at large.

Who is paid. Public research bodies would fund it, and the firms that already build large scientific equipment 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. An instrument for watching a tiny cosmos serves a few scientists only.

Who is paid. Public research bodies would pay, and the established makers of scientific instruments 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 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 large prize. Crossing between stars quickly would open new worlds to trade and settlement, an industry of its own, though most people's daily lives would change slowly.

Who is paid. Shipping lines and explorers would pay, and once one yard had built the drive others could, so established shipbuilders 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. Gripping and moving things at a distance would change towing, cargo handling, building and rescue.

Who is paid. Ports, builders and ship operators would pay, and with the method open to copying, makers of cranes, tugs and handling gear 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. A substance imagined from a reversed cosmos has no stated use.

Who is paid. Nothing is sold; the description gives nothing anyone could do with 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. Making things unseen would be prized by armies and police above all.

Who is paid. Governments would pay for it as a tool of war and spying, and the firms that already hold defence 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. Seeing what is coming would change how trade, insurance and planning are done, though the edge shrinks once many can look.

Who is paid. Firms and advisers would buy it first, and once many makers can build the viewer 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 stretch of time that repeats is an event in the story, 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 small prize. The real particle is made only in tiny amounts for research, and the story promises no more than its existence.

Who is paid. Public laboratories pay for the machines that make it, and the few firms that already build such machines are paid.

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. Pushing things with light is gentle, so its use is mostly driving light sails and nudging objects in space.

Who is paid. Space agencies would pay, and the firms that already build their lasers and craft 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 fairly sure of this one.

A small prize. It does the job cabled lifts already do, a little more neatly.

Who is paid. Building owners would pay, and the firms that already fit and service lifts would sell it once the method was known.

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 way into another cosmos could open new lands and materials, though what lies beyond is unknown.

Who is paid. I assume a state would claim the opening 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.

A small prize. Measuring gravity is a specialist need of surveyors and navigators.

Who is paid. Survey and navigation firms would buy it, and instruments like this can be made by many workshops, 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 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.

A small prize. A tiny cosmos in a laboratory is a tool for study, of interest to scientists more than to buyers at large.

Who is paid. Public research bodies would fund it, and the firms that already build large scientific equipment 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 the travel it allows: crossing between stars quickly would open new worlds to trade and settlement, an industry of its own, though most people's daily lives would change slowly.

Who is paid. Nobody can own a realm open to every ship, so shipping lines would pay for the ships that enter it, and established shipbuilders who could copy the drive 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 any past moment, including a moment ago, would transform policing, courts and spying and end privacy.

Who is paid. Police, courts and spy services would be the buyers, and the firms that already supply them would build it once the method was known.

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. Moving people and goods across any distance at once would replace most transport and change where people live and work.

Who is paid. Carriers would buy the machines and charge fares, and since others could build them once shown, the firms that already own stations and routes 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 way into another world could open new lands and materials, though what lies beyond is unknown.

Who is paid. I assume a ship that enters another universe would be run like a space programme, with a government paying its usual contractors to build it, since others could copy it 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. 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.

A small prize. Making the stars look farther away has no everyday use, so it is judged as a way to hide or deceive.

Who is paid. Only a government could pay for a field so large, and the firms that already build its great works 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. Reaching other times would be worth an industry in study, salvage and statecraft, though few people would need it day to day.

Who is paid. I assume a state would keep for itself a machine that can alter history, so a government pays and its established contractors build it, since others could copy it 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 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. Judged as the force put to work: carriers, builders and launch firms would pay, and as the trick could be copied, 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. 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 large prize. A wall nothing can pass would reshape defence, prisons and the guarding of valuable places.

Who is paid. Armies and police would be the main buyers, and with the method copyable among arms makers, the firms already holding such contracts 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 fairly sure of this one.

A vast prize. Moving people and goods across any distance at once would replace most transport and change where people live and work.

Who is paid. Carriers would buy the machines and charge fares, and since others could build them once shown, the firms that already own stations and routes 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 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.

A large prize. Removing the jolt of sudden stops would make every fast vehicle safer and allow far quicker journeys.

Who is paid. Vehicle and ship builders would fit it, and since the method could be copied, those established 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. A new source of power would change the cost of energy, though the description does not say how much it gives or how safely.

Who is paid. I assume a thing this dangerous would be a public work, with a government paying established power-plant builders, and others able to copy it 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 large prize. Ships that outrun light would open other stars to trade and settlement, an industry of its own, though most people would never ride one.

Who is paid. Shipping lines and explorers would buy the engines, and once the trick is known any shipyard could fit it, so the established 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 fairly sure of this one.

A large prize. A way into another world could open new lands and materials, though what lies beyond is unknown.

Who is paid. I assume it would be run like a space programme, with a government paying its usual contractors to build and guard it, since others could copy it 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 large prize. Walking through walls would change rescue, mining and spying, and would undo most locks.

Who is paid. I assume the public would be barred from it, so police, armies and rescue services pay and their usual suppliers build 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. A wall nothing can pass would reshape defence, prisons and the guarding of valuable places.

Who is paid. Armies and police would be the main buyers, and with the method copyable among arms makers, the firms already holding such contracts 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 fairly sure of this one.

A small prize. Unlike the generators, these only hold one person's feet down, a niche piece of crew kit.

Who is paid. Ship and mine operators would issue them to workers, and many makers could copy 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.

A large prize. A house with far more rooms than its plot allows would cut the cost of housing where land is scarce.

Who is paid. Households would buy it, and since the design could be copied the builders and land owners already in the trade 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. Personal flight without wings or fuel would be a new kind of everyday travel, though a narrower use than lifting freight and vehicles.

Who is paid. Ordinary people would buy it as they buy bicycles, and once one firm made it many could, 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 large prize. Removing the crush of hard acceleration would make launches safer and allow far quicker journeys, assuming it works beyond launch as other such screens do.

Who is paid. Vehicle and ship builders would fit it, and since the method could be copied, those established 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 large prize. Normal weight on ships and stations would make living and working in space healthy and practical, which is an industry's worth but only for those off Earth.

Who is paid. Ship and station builders would fit it as standard, and with nothing to stop copying, those established 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. Seeing what is coming would change how trade, insurance and planning are done, though the edge shrinks once many can look.

Who is paid. Firms and advisers would buy it first, and once many makers can build the viewer 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. 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 flare that destroys ships is a hazard.

Who is paid. Nothing is sold; it is an accident 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 large prize. Stopping time inside a box would end spoilage and hold the badly hurt until help comes, assuming a container of household or shop size.

Who is paid. Homes, shops and hospitals would buy it like a refrigerator, and since it could be copied the appliance makers with factories and shops 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. Hauling real objects out of earlier eras reaches the past as the time machines do, and would be worth an industry in salvage, study and lost materials.

Who is paid. I assume a state would keep for itself a machine that reaches into the past and could so alter history, so a government pays and its established contractors build it, since others could copy it 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 large prize. Deep cold from a spray would cut the cost of freezing, of strong magnets and of other work that needs extreme cold.

Who is paid. Factories and laboratories would buy it, and since it could be copied the chemical firms with plants 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 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. 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.

A vast prize. Copying any object at will would make most goods nearly free for most people.

Who is paid. Assuming a home-sized machine, households would buy it, and since the first machine can copy itself 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 large prize. Ships that outrun light would open other stars to trade and settlement, an industry of its own, though most people would never ride one.

Who is paid. Shipping lines and explorers would buy the engines, and once the trick is known any shipyard could fit it, so the established 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 fairly sure of this one.

A large prize. A region sealed off from the rest of space would be prized as a hiding place and a vault, assuming that is its use.

Who is paid. Governments would pay for secure hidden space, and the firms that already hold defence 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. Normal weight on ships and stations would make living and working in space healthy and practical, which is an industry's worth but only for those off Earth.

Who is paid. Ship and station builders would fit it as standard, and with nothing to stop copying, those established 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. Normal weight on ships and stations would make living and working in space healthy and practical, which is an industry's worth but only for those off Earth.

Who is paid. Ship and station builders would fit it as standard, and with nothing to stop copying, those established 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. A way into another world could open new lands and materials, though what lies beyond is unknown.

Who is paid. I assume it would be run like a space programme, with a government paying its usual contractors to build and guard it, since others could copy it 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.

No prize. A burst of energy from a ship's jump is a side effect, 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. 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.

A large prize. A field that stops star engines nearby would be the main defence of any world in an age of such ships.

Who is paid. Governments would pay for it, and the firms that already hold defence 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. Ships that outrun light would open other stars to trade and settlement, an industry of its own, though most people would never ride one.

Who is paid. Shipping lines and explorers would buy the engines, and once the trick is known any shipyard could fit it, so the established 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 fairly sure of this one.

A large prize. Normal weight on ships and stations would make living and working in space healthy and practical, which is an industry's worth but only for those off Earth.

Who is paid. Ship and station builders would fit it as standard, and with nothing to stop copying, those established 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. Crossing between stars quickly would open new worlds to trade and settlement, an industry of its own, though most people's daily lives would change slowly.

Who is paid. Judged as the drive the word stands for: shipping lines and explorers would pay, and since others could build it once shown, established shipbuilders 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. 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.

A small prize. It is a better pocket knife.

Who is paid. People would buy it in shops, and a small tool like this would be copied by many makers.

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 does the job cabled lifts already do, a little more neatly.

Who is paid. Building owners would pay, and the firms that already fit and service lifts would sell it once the method was known.

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 nothing can pass would reshape defence, prisons and the guarding of valuable places.

Who is paid. Armies and police would be the main buyers, and with the method copyable among arms makers, the firms already holding such contracts 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 fairly sure of this one.

A large prize. Crossing between stars quickly would open new worlds to trade and settlement, an industry of its own, though most people's daily lives would change slowly.

Who is paid. Shipping lines and explorers would pay, and once one yard had built the drive others could, so established shipbuilders 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. Matter colder than cold is a state 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.

A large prize. A barrier that stops any attack would reshape defence and policing, here in a size a person can wear.

Who is paid. Armies and police would buy it first, and since rivals could copy it the firms that already hold defence 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. An energy beam used as a weapon is one arm among many, assuming that is its purpose.

Who is paid. Governments would buy it for their forces, and the firms that already hold arms 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. Holding a prisoner in place without bars is a convenience for police and jails.

Who is paid. Governments would buy it, and the firms that already supply police and prisons 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. Passing through soil and bedrock would change mining, tunnelling, rescue and survey work.

Who is paid. Unlike the devices for walking through walls, this one is described for the ground, so mining and building firms would buy it, and the established makers of their equipment 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. Stopping time over a wide area would let stores, patients or whole places be kept unchanged until wanted.

Who is paid. I assume a field this large is a public work, so a government pays and its established contractors build 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. Personal flight without wings or fuel would be a new kind of everyday travel, though a narrower use than lifting freight and vehicles.

Who is paid. Ordinary people would buy it as they buy bicycles, and once one firm made it many could, 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 large prize. Normal weight on ships and stations would make living and working in space healthy and practical, which is an industry's worth but only for those off Earth.

Who is paid. Ship and station builders would fit it as standard, and with nothing to stop copying, those established 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 small prize. A hovering walkway is a convenience for one site.

Who is paid. Site owners would buy it, and with the floating metal available many firms could lay such a path.

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 small prize. A star turned into a marker is a lighthouse for star travel, useful but a small part of that trade.

Who is paid. No ship could be charged for each sighting, so governments would pay, and the firms that already build their great works 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. Ships that outrun light would open other stars to trade and settlement, an industry of its own, though most people would never ride one.

Who is paid. Shipping lines and explorers would buy the engines, and once the trick is known any shipyard could fit it, so the established 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 fairly sure of this one.

No prize. A field from the galaxy's core is a fact of nature, and the description gives no use anyone could put it to.

Who is paid. Nothing is sold; nobody made it or can own 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 small prize. Following a ship through its jumps matters to navies and police and to few others.

Who is paid. Navies and police would pay, and their established suppliers would build it.

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. Turning music into living creatures is a curiosity for collectors and pet lovers.

Who is paid. People would buy it for themselves, and with many makers able to copy it 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. Casting a region into darkness has no everyday use, so it is judged as a show of force.

Who is paid. Only a government would pay for it, and the firms that already hold defence 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. Pulling goods and knowledge out of other times, later ones included, would be worth an industry of its own.

Who is paid. I assume a state would keep for itself a machine that reaches into other times, so a government pays and its established contractors build it; a head start from what it fetches does not stop others copying the machine.

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.

A large prize. Going back to watch the past firsthand is travel to the past under a scholar's name, worth an industry in study, salvage and statecraft though few people would need it day to day.

Who is paid. I assume a state would keep for itself a machine that reaches into the past and could so alter history, so a government pays and its established contractors build it, since others could copy it 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 large prize. Seeing a person's life to come would change how people plan, hire and insure, though the edge shrinks once many can look.

Who is paid. Advisers and firms would buy it first, and once many makers can build the scanner 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 puzzle about changing the past is a problem of logic, 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. Pulling things out of other times, later ones included, would be worth an industry of its own even though this machine fishes at random.

Who is paid. I assume a state would keep for itself a machine that reaches into other times, so a government pays and its established contractors build it; a head start from what it fetches does not stop others copying the machine.

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 rupture in time is a disaster, not something anyone would 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. Seeing any past moment, including a moment ago, would transform policing, courts and spying and end privacy.

Who is paid. Police, courts and spy services would be the buyers, and the firms that already supply them would build it once the method was known.

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. Signals quicker than light would tie distant worlds into one market, an industry like today's long-distance networks.

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 fairly sure of this one.

No prize. It is a way of picturing gravity, an idea and not a product.

Who is paid. Nothing is sold; it is a figure of speech used in teaching.

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 probe sent to another universe serves science and curiosity.

Who is paid. Public research bodies would pay, and the firms that already build their probes 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 fairly sure of this one.

A small prize. Steering clouds between the stars would matter only if one threatened the sun or the Earth.

Who is paid. Only governments would pay for such protection, and their established space contractors would build 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. Lifting whole buildings and towns off the ground and into space without burning fuel would cut the cost of flight and of reaching space.

Who is paid. Carriers and launch firms would buy it, and since others could copy the device once it is seen, the established builders of aircraft and spacecraft 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. The real effect lifts only tiny things with huge magnets; the promise of floating ordinary objects without touching them would mainly help factories and laboratories.

Who is paid. Firms would buy it for handling delicate work, and magnets are something many makers can supply.

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. Containers bigger inside than out would cut the cost of storing and shipping almost everything.

Who is paid. Shippers and warehouses would buy them in bulk, and a box, once the method is known, is something many makers could turn out.

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 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.

A large prize. Knowing what is about to happen would be worth a great deal to traders, insurers and guards.

Who is paid. Firms would buy it first, but film is easy for many makers to produce once the method is known, and foreknowledge everyone has earns little for its 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. Reaching the past would be worth an industry in study, salvage and statecraft, though few people would need it day to day.

Who is paid. I assume a state would keep for itself a machine that can alter history, so a government pays and its established contractors build it, since others could copy it 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 large prize. A place ships must pass through to jump between stars is worth what the trade through it is worth, as a strait or a harbour is.

Who is paid. Shippers would pay tolls to pass, and I assume the place can be held, so whoever holds it controls a route others cannot make more of.

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 way into another world could open new lands and materials, though what lies beyond is unknown.

Who is paid. I assume it would be run like a space programme, with a government paying its usual contractors to build and guard it, since others could copy it 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.

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.

A small prize. Cancelling the weight of light objects only is a convenience for lamps, chairs and small loads.

Who is paid. People would buy it for themselves, and with many makers able to copy it 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 weightless sports hall is one more kind of entertainment venue.

Who is paid. Promoters would pay to build it, and owners of venues and leagues would collect, since any builder could supply the sphere.

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 ship that cannot be seen or detected would upset the balance of every navy.

Who is paid. Navies would pay, and the yards and arms makers that already build warships would supply it once the method spread.

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. Normal weight on ships and stations would make living and working in space healthy and practical, which is an industry's worth but only for those off Earth.

Who is paid. Ship and station builders would fit it as standard, and with nothing to stop copying, those established 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. Shrinking goods and people would change the cost of shipping, storage and work inside the body.

Who is paid. Hospitals and carriers would buy the machines, and with many makers able to copy them 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. Floating in bed between plates is a luxury, with the gravity trick used at its smallest scale.

Who is paid. People would buy it for themselves, and with many makers able to copy it 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 large prize. Calling back the bodiless selves of people would be worth a great deal to families, assuming that is what it retrieves.

Who is paid. Families would pay, and the temples or clinics that already hold the means to house those selves again 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 far richer fuel would cut the cost of power for ships and cities, though unlike an endless source it must be made and used up.

Who is paid. Power and ship firms would pay, and once one plant had made the elements others could, so the firms that already own such plants 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. Stopping time inside a box would end spoilage and hold the badly hurt until help comes, assuming a container of household or shop size.

Who is paid. Homes, shops and hospitals would buy it like a refrigerator, and since it could be copied the appliance makers with factories and shops 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 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. It is the dwelling of a living being, not a made thing, and the travel comes from the being's own powers.

Who is paid. Nothing is sold, since no one can make or own the creature that does the work.

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. Personal flight without wings or fuel would be a new kind of everyday travel, though a narrower use than lifting freight and vehicles.

Who is paid. Ordinary people would buy it as they buy bicycles, and once one firm made it many could, 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 large prize. A barrier that stops any attack on a whole city would reshape defence and be worth an industry of its own.

Who is paid. Armies and city authorities would pay, and since rivals could copy it the firms that already hold defence 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 hovering mansion is a showpiece for the very rich.

Who is paid. Wealthy owners would pay, and established builders would put it up using lifting gear anyone could buy.

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. Passing through solid walls would change rescue, mining and spying, and would undo most locks.

Who is paid. I assume the public would be barred from it, so police, armies and rescue services pay and their usual suppliers build 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. Stopping time inside a box would end spoilage and hold the badly hurt until help comes, assuming a container of household or shop size.

Who is paid. Homes, shops and hospitals would buy it like a refrigerator, and since it could be copied the appliance makers with factories and shops 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. Talking and stepping straight to another person anywhere would change how most people travel, work and trade.

Who is paid. People would buy the cards for themselves, and unlike a fixed gateway they need no sites or networks, so assuming many can make them 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. Ships that outrun light would open other stars to trade and settlement, an industry of its own, though most people would never ride one. It is named as an idea rather than a device, so it is judged as the working thing it describes.

Who is paid. Shipping lines and explorers would buy the engines, and once the trick is known any shipyard could fit it, so the established 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 fairly sure of this one.

A small prize. Gathering rare magnetic particles in space is a niche supply trade, assuming they are wanted for compact motors.

Who is paid. Makers of machinery would buy the catch, and with open space free to any prospector 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 place ships must pass through to jump between stars is worth what the trade through it is worth, as a strait or a harbour is.

Who is paid. Shippers would pay tolls to pass, and I assume the place can be held, so whoever holds it controls a route others cannot make more of.

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. Unlike the hard barriers, this one only holds things back gently, so it is a better fence rather than a weapon.

Who is paid. Owners of venues, farms and sites would buy it, and a fence is the kind of thing many firms could make.

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 wall nothing can pass would reshape defence, prisons and the guarding of valuable places.

Who is paid. Armies and police would be the main buyers, and with the method copyable among arms makers, the firms already holding such contracts 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 fairly sure of this one.

A large prize. A barrier that stops any attack would reshape defence and be worth an industry of its own.

Who is paid. Armies and city authorities would pay, and since rivals could copy it the firms that already hold defence 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 field that holds in air at a doorway replaces an airlock, a single fitting for the few who work in space.

Who is paid. Operators of ships and stations would buy it, and the firms that already supply their equipment 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. Reaching other times would be worth an industry in study, salvage and statecraft, though few people would need it day to day.

Who is paid. Here the story has the state pay to send idle workers back, and its established contractors build the machine, since others could copy it 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. A beam of magnetic force is mostly a weapon against metal ships, a narrow use.

Who is paid. I assume armed forces are the buyers, 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 small prize. Flipping an object into its mirror image is useful mainly to makers of drugs and chemicals, a niche.

Who is paid. Chemical and drug firms would pay to use it, and assuming others could build their own once it is understood 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. Stopping time for those inside would let a prison hold people at almost no running cost.

Who is paid. Because this one is a jail the state pays, and the firms that already build and supply prisons 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 field that holds air around the body would replace space suits, diving gear and much protective clothing.

Who is paid. Employers of people who work in harsh places would buy it, and a worn device could be copied by many makers.

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 barrier that stops any attack would reshape defence and be worth an industry of its own.

Who is paid. Armies and city authorities would pay, and since rivals could copy it the firms that already hold defence 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. Crossing between stars quickly would open new worlds to trade and settlement, an industry of its own, though most people's daily lives would change slowly.

Who is paid. The story treats it as a joke with wild side effects; assuming it can be steered, shipping lines would pay and shipbuilders who could copy it 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 particle that makes compact power plants and other devices possible would change the costs of energy and arms, assuming it works as the series shows.

Who is paid. Makers of power plants and weapons would buy it, and since a particle of nature can be produced by anyone who learns how, 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. Speeding up time in a zone would shorten growing, ageing, curing and testing across several trades.

Who is paid. Farms, factories and laboratories would buy it, and with many makers able to copy it 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 stray object that could break cause and effect is a hazard, 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. If ghosts were real, catching them would be a niche service like pest control.

Who is paid. Removal firms would buy the boxes, and a simple box could be made by many once the method was out.

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 dwelling hidden from every kind of detection would be prized for secret bases and safe refuges.

Who is paid. Governments would pay for it, with a few very rich buyers besides, and the firms that already hold defence 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. Stopping time inside a box would end spoilage and hold the badly hurt until help comes, assuming a container of household or shop size.

Who is paid. Homes, shops and hospitals would buy it like a refrigerator, and since it could be copied the appliance makers with factories and shops 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 raw medium beneath all matter 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.

A small prize. Catching ghosts is a niche service even assuming there are ghosts to catch.

Who is paid. Small removal firms would buy the packs, and with many makers able to copy them 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. It does the job cabled lifts already do, a little more neatly.

Who is paid. Building owners would pay, and the firms that already fit and service lifts would sell it once the method was known.

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. Lifting and pushing craft without burning fuel would cut the cost of flight and of reaching space.

Who is paid. Carriers and launch firms would buy it, and since others could copy the device once it is seen, the established builders of aircraft and spacecraft 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 navigation aid for ships that outrun light is a needed part but only a niche within that trade.

Who is paid. Ship operators would buy it, and the established makers of ship instruments 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. Moving people and goods across any distance at once would replace most transport and change where people live and work.

Who is paid. Carriers would build the gateways and charge fares, and since others could build them once shown, the firms that already own stations and routes 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. Crossing between stars quickly would open new worlds to trade and settlement, an industry of its own, though most people's daily lives would change slowly.

Who is paid. Shipping lines and explorers would pay, and once one yard had built the drive others could, so established shipbuilders 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 way into another world could open new lands and materials, though what lies beyond is unknown.

Who is paid. I assume a state would keep a blade that opens other worlds and run its use like a space programme, paying its usual contractors; the description does not say the blade is the only one of its kind.

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 field that holds air and warmth would replace space suits, diving gear and much protective clothing.

Who is paid. Employers of people who work in harsh places would buy it, and a worn device could be copied by many makers.

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 fitting inside a ship, a neater way to move cargo down a corridor.

Who is paid. Ship operators would pay for it as part of the vessel, and established shipbuilders would fit it.

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 fixed link between far stars would carry all trade between them, an industry of its own.

Who is paid. Shippers would pay tolls, and whoever holds a wormhole mouth controls the only quick route, which others cannot simply 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. Getting the answer to any calculation at once would change the cost of computing for every firm that uses it.

Who is paid. Firms would buy the computing by the job, and the companies that already run large computer centres would install it once others had shown how.

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. Instant messages between planets matter only to the few people and machines working far from home.

Who is paid. Space operators would pay for the service, and the firms that already run communication networks 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. 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.

A large prize. Stopping time inside a box would end spoilage and hold the badly hurt until help comes, assuming a container of household or shop size.

Who is paid. Homes, shops and hospitals would buy it like a refrigerator, and since it could be copied the appliance makers with factories and shops 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.