Mind and neurotechnology

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.

No prize. This is a daily routine of naps and waking, not a thing that can 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 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. Writing by thought is a convenience, since keyboards and speech already do the job.

Who is paid. Ordinary people would get it inside gadgets they buy, and once it works it is easy 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 fairly sure of this one.

A small prize. Keeping your own thoughts to play back later is a notebook that needs no writing, a convenience.

Who is paid. The user records their own thoughts, 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. A machine body for a living brain would give the dying more years, though few would choose such a life.

Who is paid. The dying and their families would pay, and hospitals and makers of medical machinery 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. Letting a doctor feel what the patient feels is one more aid to diagnosis among many.

Who is paid. Hospitals and clinics would buy it, and the makers of medical equipment who already sell to 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 fairly sure of this one.

A small prize. Showing others what you remember or picture is a new kind of camera, a pleasure and a keepsake rather than a need.

Who is paid. Unlike the probes used on unwilling subjects, I assumed this headset is worn by a willing person to show their own recollections, so ordinary people would buy it, 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.

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. Removing chosen memories would be worth an industry; here the aim is room for fresh learning rather than easing pain, which the story takes on trust.

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 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 large prize. Giving sight to blind people would be an industry of its own and would change their lives.

Who is paid. Blind people and their families would pay, often through their health cover, and the hospitals and makers of medical devices would collect since the device 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. 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. Passing thoughts from mind to mind faster is a new way to talk, and speech and telephones already do the job for nearly everyone.

Who is paid. Ordinary people 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.

No prize. It is an illness of long voyages, not something made that anyone would buy.

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.

A large prize. Lessons felt as full living scenes would improve schooling, but the learner still learns at something like an ordinary pace.

Who is paid. Learners and families would pay, and once a first firm had built it others could copy the device and many could make the scenes, 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. Showing others the pictures in your own mind is a novelty and an aid to explaining.

Who is paid. The wearer shows their own thoughts willingly, 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 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 large prize. A giant machine driven by a living brain is above all an engine of war or heavy work.

Who is paid. Unlike the plain brain in a metal body, I assumed an army buys this giant, and the firms that already build its war machines 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. Reshaping character and temperament on request would treat troubles that no medicine now reaches.

Who is paid. Patients would pay, the drug could be copied, and the hospitals and medicine firms already doing such work 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. An honest reading of what someone feels is a useful instrument for doctors, hirers and sellers, but a niche.

Who is paid. I assumed clinics and firms buy it, and an instrument like this is easy for other makers 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. Showing others what you remember or picture is a new kind of camera, a pleasure and a keepsake rather than a need.

Who is paid. Unlike the probes used on unwilling subjects, I assumed this is used by a willing person to show a scene to others, so ordinary people would buy it, 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. A mechanical body for a living brain would be an industry of its own for the dying and the badly injured.

Who is paid. People would pay to go on living this way, and the hospitals and makers of bodies that already have the surgeons and workshops would collect, since the method itself can 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 vast prize. Loading great stores of knowledge straight into the brain would replace years of schooling and training for most people.

Who is paid. Learners and families would pay for it themselves, and once a first firm had built it others could copy it and many could supply the lessons, 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. Replaying a memory backward is a curiosity with few uses.

Who is paid. I assumed a few curious people buy it for themselves, and nothing stops others making 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 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. Keeping a brain alive and able to talk after the body fails would be an industry of its own for the dying.

Who is paid. People would pay to go on living this way, and the hospitals that already have the surgeons and life-support wards 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. Telephones and letters already carry messages, so sending them mind to mind is a convenience.

Who is paid. People would buy it for themselves, and once it existed 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. Sharpening performance 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 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.

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.

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. Stories lived as experience would rival film and games as popular leisure, as the story promises.

Who is paid. Ordinary people would pay for each experience, the machine could be copied, and the studios that own the stories and the names people know 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. This is the venue rather than the machine, but it sells the same thing: dreamed adventures that rival film as popular leisure.

Who is paid. Ordinary people would pay for each experience, the machine could be copied, and the studios that own the stories and the names people know 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. Stories lived as experience would rival film and games as popular leisure, as the story promises.

Who is paid. Ordinary people would pay for each experience, the machine could be copied, and the studios that own the stories and the names people know 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. It only matters where minds can be read, and then it guards privacy much as a lock does.

Who is paid. I assume the barrier is a made or taught thing, which the description does not say; people who fear being read would buy it and many 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 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.

No prize. I took this to be a merged way of being for a group of people, with no made device named, so not a thing that can 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 not very sure of this one.

A large prize. Swaying a whole population at once would be worth a great deal to any ruler who wanted it.

Who is paid. A government would pay, and once the device existed the firms that already build broadcasting and security 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 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.

A small prize. Sorting the memories of a very long life only matters to people who live that long, a niche unless long life comes too.

Who is paid. The long-lived would pay for it themselves, and it is a method any trained person could offer, 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. It only matters where minds can be seized, and then it guards a person much as a lock does.

Who is paid. People who fear being read would buy it for themselves, assuming it is sold openly, and it is simple enough for many makers 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.

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.

A large prize. An added machine brain working beside the natural one would be an industry of its own, though the description does not say what the extra brain does.

Who is paid. People would buy it for themselves, and since the implant 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. Remaking a person's character for good would be an industry of its own for those unhappy with who they are.

Who is paid. The description does not say whether the subject is willing; I assume people seek it for themselves and pay, and the clinics that already treat the mind would collect since the methods 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 large prize. Reading memories and feelings out of any living brain would reshape questioning and the study of animals alike.

Who is paid. It is worked by an operator on a subject, human or animal, so I assume the state and its services are the main buyers, and the firms that already supply them would collect since 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 large prize. Removing chosen memories would treat trauma and grief for a great many people, worth an industry of its own.

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 vast prize. Putting knowledge straight into the brain would replace years of schooling and training for most people.

Who is paid. Families and learners would pay for it themselves, and once one firm had built the gear others could copy it and many could write the lessons, 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. Putting knowledge straight into the brain would replace years of schooling and training for most people.

Who is paid. Families and learners would pay for it themselves, and once one firm had built the gear others could copy it and many could write the lessons, 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 the act of using a born gift, not something made or taught that could 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.

A small prize. It only matters where minds can be read, and then it guards privacy much as a lock does.

Who is paid. People who fear being read would buy it for themselves, assuming it is sold openly, and it is simple enough for many makers 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.

No prize. It is a creature that preys on people, 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.

A large prize. A machine that questions a mind by itself would reshape police work and spying.

Who is paid. It is done to a subject, so though banned in the story it is judged as bought by a state: the state would pay for it as an interrogation tool, and since it could be copied the firms that already supply police and security services 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.

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.

No prize. I took this to be a shared way of being for many minds, with no made device named, so not a thing that can 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 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. Telephones already carry words between distant people, so sending thoughts instead is a convenience.

Who is paid. People would buy it for themselves, and once it existed 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. Having chosen dreams placed in your sleep would be an entertainment industry of its own.

Who is paid. Customers would pay for each dream, and since the method could be copied the owners of the stories and of the venues people already visit 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.

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.

No prize. This is a person born with a gift, not a thing that can 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 vast prize. A full night's rest in a short session would hand nearly everyone hours of extra waking life each day.

Who is paid. Ordinary people would buy it for themselves, and once one firm had built 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 fairly sure of this one.

A large prize. Understanding any speaker without learning the language would remove a cost from trade, travel and work everywhere.

Who is paid. Travellers and firms alike would buy it, and I assumed that once thought can be read at all a translator is easy 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. Drawing true answers straight from a brain would reshape police work, courts and spying.

Who is paid. It is done to a subject, so though banned in the story it is judged as bought by a state: the state would pay for it as an interrogation tool, and since it could be copied the firms that already supply police and security services 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. An instrument that plays sights and feelings into the brain would found a new kind of show.

Who is paid. Audiences would pay to attend or own it, and since the instrument could be copied the known performers and the halls and channels that carry them 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. Hiding your thoughts matters only where mind-readers exist, so it is a niche.

Who is paid. I assumed people who fear being read buy it for themselves, and a jamming gadget is easy 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. Steering a machine by thought is a better set of controls, and hand controls already do the job.

Who is paid. Firms that run the machines would buy it, and once one maker had the link 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 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.

No prize. It is a born ability of a person, not something made or taught that could 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.

A large prize. A screen in the eye itself is the same promise as other eye displays, a personal screen always in view, which is worth an industry of its own.

Who is paid. People pay to have it fitted, and the firms that already make displays and the clinics that 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 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. It only matters where minds can be read, and then it guards privacy much as a lock does.

Who is paid. People who fear being read would buy it for themselves, assuming it is sold openly, and it is simple enough for many makers 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. Shaping what every household believes would be worth a great deal to a ruler.

Who is paid. No household would choose this for itself, so I assume the state requires it and pays or makes owners pay; the breeders already set up to supply and service it would collect since it could be bred by others.

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 large prize. A machine that truly eases anxiety would treat one of the commonest troubles of the mind at low cost.

Who is paid. Sufferers would buy or hire it themselves, and once one machine worked 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 small prize. A switch in the teeth is a handy control for implants a person already has.

Who is paid. Those with implants would pay for it, and a switch is simple 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 fairly sure of this one.

No prize. This is a being with a gift, not a thing that can 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.

No prize. It is a born gift of a person, not something made or taught that could 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.

A large prize. Moving many times faster than normal would be worth an industry of its own to fighters, athletes and manual workers.

Who is paid. I assume people buy the surgery for themselves, though armies would want it too, and the hospitals that already have the surgeons would collect since the operation 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. Lamps and night glasses already let people see in the dark, so a light inside the eye is a convenience.

Who is paid. People would buy it for themselves, and once it existed 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 fairly sure of this one.

A small prize. Very few people have an urge to kill and seek a cure for it, so this is a niche.

Who is paid. It is sold as a home machine, so households pay, and many makers could copy it; it is small because the cure is so narrow, unlike a machine for common troubles.

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 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 vast prize. Putting knowledge straight into the brain would replace years of schooling and training for most people.

Who is paid. Families and learners would pay for it themselves, and once one firm had built the gear others could copy it and many could write the lessons, 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. Putting knowledge straight into the brain would replace years of schooling and training for most people.

Who is paid. Families and learners would pay for it themselves, and once one firm had built the gear others could copy it and many could write the lessons, 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. 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.

A large prize. A mechanical body for a living brain would be an industry of its own for the dying and the badly injured.

Who is paid. People would pay to go on living this way, and the hospitals and makers of bodies that already have the surgeons and workshops would collect, since the method itself can 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 large prize. Taking in history as recorded thought would be an industry of its own, part schooling and part entertainment.

Who is paid. People would buy or borrow the recordings for themselves, and since the helmet could be copied the holders of the recorded lives and archives would collect; it plays back at the pace of living, so it is not instant loading.

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 vast prize. A people born without the urge to violence would be safe from each other, which changes how nearly everyone lives.

Who is paid. It only works if every child gets it, so the state would pay, and the medicine firms that already supply public health 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 disc that shows how the wearer feels is a novelty with some social use.

Who is paid. Unlike the instrument for clinics this is worn by ordinary people, who would buy it themselves, and it is easy 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.

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.

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. Direct stimulation of the reward centres 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 large prize. Sending minds out to faraway planets would open exploration and trade in what they find.

Who is paid. I assume exploring firms would buy the machine; it could be copied, and it works only with gifted minds, so the gain goes to those rare operators as pay and not to any 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 small prize. I assume it is a toy set whose escape happens in the players' own heads, which makes it a pastime.

Who is paid. Players would buy the dolls and fittings themselves, and since any workshop could make them the toy sellers with known names and shops 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. 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. Sleep on command would be worth an industry of its own to the many people who sleep badly.

Who is paid. People who sleep badly would buy it for themselves, and the gear is simple enough for many makers 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. 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 small prize. Sharing one person's feelings with many others is a religious or social comfort for those who want it.

Who is paid. Believers would buy the box for themselves, and a simple box is easy 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. 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 small prize. A cure for one unhappy love is a comfort for a few.

Who is paid. The lovesick would pay for it themselves, and once the machine worked 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 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. 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.

A large prize. A signal that makes lessons stick would speed up schooling, but the learner still sits through the recording at an ordinary pace.

Who is paid. Learners and families would buy the recordings themselves, and any publisher could add such a signal once it was 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.

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 drink that sharpens thinking would be wanted by everyone whose work is mental.

Who is paid. People would buy it for themselves as they buy any stimulant, and many makers could brew it once the recipe was 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 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.

A small prize. A voice that compels obedience works only on those within hearing, so it controls a few people at a time.

Who is paid. I assume a state would pay to train its agents in it, and though it is a technique its usual suppliers and schools 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. This names a person, but the link behind it, a mind wired into a machine, is a better set of controls where hand controls already do the job.

Who is paid. Firms that run the machines would buy it, and once one maker had the link 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 fairly sure of this one.

A small prize. Talking with the stored minds of the dead is precious to the bereaved, but the worth lies in storing the mind, and this is only the telephone to it.

Who is paid. Families would pay, and I assumed the stored minds already exist, so the talking device alone is easy to copy and 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 therapist who can enter and shape dreams could treat troubles of the mind that talk alone does not reach.

Who is paid. Clinics and therapists would buy the machine, and the makers of medical equipment who already sell to 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. Removing chosen memories would treat trauma and grief for a great many people, worth an industry of its own.

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 large prize. Memories of a holiday or adventure never taken would stand in for travel and film at far lower cost.

Who is paid. Ordinary people would pay for each memory, the method could be copied, and the leisure firms that own the stories and the names people know 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. Telephones already carry words between people, so sending thoughts instead is a convenience.

Who is paid. People would buy it for themselves, and once it existed 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.

No prize. It is ordinary natural memory, which everyone already has and nobody sells.

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.

A large prize. Pleasure on demand from a current in the brain would draw as many buyers as any vice, harmful as the story shows it to be.

Who is paid. Users would pay for it themselves, and a wire and a small current are 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 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. Choosing how to feel at home would stand in for much of what people now seek from drink, pills and therapy.

Who is paid. Households would buy it as a home appliance, 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. Choosing how to feel would stand in for much of what people now seek from drink, pills and therapy.

Who is paid. Households would buy it as a home appliance, 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 small prize. Passing thoughts to others by machine is a new way to talk, and speech and telephones already do the job for nearly everyone.

Who is paid. Ordinary people would buy it for themselves, and once one maker could decode thought 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. This is the plug-in part of the pleasure implant, and I judged it with the implant: pleasure on demand would draw as many buyers as any vice, harmful as the story shows it to be.

Who is paid. Users would pay for it themselves, and a wire and a small current are 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 not very sure of this one.

A large prize. Pleasure on demand from a current in the brain would draw as many buyers as any vice, harmful as the story shows it to be.

Who is paid. Users would pay for it themselves, and a wire and a small current are 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 not very sure of this one.

A vast prize. Writing a book straight into memory would replace years of study for most people.

Who is paid. Learners and families would pay for it themselves, and once a first firm had built it others could copy it and many could supply the lessons, 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. Talking with relatives kept in cold storage is a comfort for the bereaved and little more.

Who is paid. Families would pay to hear from their own kin, and the amplifier could be copied by many makers, 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. Making a staged scene feel wholly real would be an entertainment industry of its own.

Who is paid. People would buy it for themselves, and since the method could be copied the owners of the stories, stars and channels people already follow 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.

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 tool that reads the thoughts of whoever it is pointed at would change how crimes are solved and secrets are kept.

Who is paid. The holder reads another person, so I judged it as a probe and assumed police and spy services are the main buyers, though private buyers would want it too; a handheld tool could be copied, so the firms that already supply those services 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 link from the nerves into made-up worlds would do what screens and games do now but far more fully, worth an industry of its own.

Who is paid. Ordinary people would pay for the implant and the service, and the firms that already make devices and run networks 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. Deep sleep at the touch of a switch would be worth an industry of its own to the many people who sleep badly.

Who is paid. People who sleep badly would buy it for themselves, and the gear is simple enough for many makers 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. Triggering pleasure in someone else from afar is a way of swaying or taming a few people, not a treat they chose.

Who is paid. It is aimed at another person, so I judge it as a tool of control; though banned in the story a state would buy it, and its usual suppliers would collect because 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. 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. Direct stimulation of the reward regions 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. Sorting the memories of a very long life only matters to people who live that long, a niche unless long life comes too.

Who is paid. The long-lived would pay for it themselves, and it is a method any trained person could offer, 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 person whose eyes act as a camera is a niche tool for filming and watching.

Who is paid. I assumed broadcasters pay for it, as in the story, and once one maker had wired a camera to the eye 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. Working a far-off body as if it were your own would let people do physical work anywhere without going there.

Who is paid. Firms would pay to put workers and performers where they are needed, and once the link existed others could copy it, so no seller keeps much; unlike the thought-steered machines this gives a whole body to live in.

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 memories and thoughts out of an unwilling head would change how crimes are solved and secrets are kept.

Who is paid. The description speaks of extracting, so I assumed it is done to a subject by police, courts and spy services, and the firms that already supply them could copy the machine 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 vast prize. Taking on a skilled person's knowledge by injection would replace years of schooling and training for most people.

Who is paid. Learners would pay for the shots themselves, and assuming the tissue can be grown in bulk many makers could supply 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. Watching brain activity as patterns on a screen is a pastime or a simple clinic tool.

Who is paid. I assumed people buy it for home use as in the story, and such a scanner is easy 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 vast prize. Keeping a copy of a mind so the person can be brought back would take away the finality of death for anyone who could have it.

Who is paid. People would pay for themselves and their families, and once one firm had done it others could, so the hospitals and medical firms people already trust 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. Instant calls across the galaxy would be worth an industry of its own wherever people are spread among the stars, which ordinary telephones could not serve.

Who is paid. Callers would pay for each call; the description does not say the organism comes from a single source, so I assumed it can be bred like other living tools here, and the carriers that already run call networks would keep the stock 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. Capturing and passing on your own thoughts for a while is a convenience for reports and records.

Who is paid. It is swallowed, so I assume the wearer is willing and buys it; 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 small prize. The story says only that it scrambles a person's senses; I assumed a tool for subduing someone, which is a narrow use.

Who is paid. I assumed a government pays, 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 large prize. A computer link inside the head would do what pocket devices do now but faster and always on, worth an industry of its own.

Who is paid. Ordinary people would pay for the implant and the service, and the firms that already make devices and run networks 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. A trained sea animal with implants does a few naval jobs that machines can also do.

Who is paid. A navy would pay, and the firms that already hold its contracts could 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 fairly sure of this one.

A small prize. Writing by thought is a convenience, since keyboards and speech already do the job.

Who is paid. Ordinary people would get it inside gadgets they buy, and once it works it is easy 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 fairly sure of this one.

No prize. This is a sorcerous family custom, not a thing that can 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 large prize. Removing chosen memories would be an industry of its own for people haunted by what they recall.

Who is paid. People would pay to be rid of chosen memories, and the clinics that already treat the mind would collect, since the procedure 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 vast prize. Chips that lift the mind beyond its natural limits would change how most people work and learn.

Who is paid. People would pay to keep up with each other, and the chip makers and surgeons already in place could copy the design and collect; this goes further than the helmets and chairs that only sharpen ordinary thought.

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 memories out of an unwilling head would change how crimes are solved and secrets are kept.

Who is paid. A probe of brain tissue is done to a subject, so I assumed the buyers are police, courts and spy services, and the firms that already supply them could copy the machine 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. This names a person, but the implant behind it hires out a body while its owner is absent, a narrow trade where it is allowed at all.

Who is paid. Employers who were let to use it would pay, and a control implant could be copied by any maker, 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. Plugging in knowledge or a skill at once would replace years of schooling and training for most people.

Who is paid. Learners and families would pay for it themselves, and once a first firm had built it others could copy it and many could supply the lessons, 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. Letting software run a body serves the few employers who want obedient hands.

Who is paid. Employers would pay for it to control workers, and the chip could be copied by many makers, 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 screen in the eye itself is the same promise as other eye displays, a personal screen always in view, which is worth an industry of its own.

Who is paid. People pay to have it fitted, and the firms that already make displays and the clinics that 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 small prize. A watch already tells the hour, so showing it inside the wearer's sight is a convenience.

Who is paid. People would buy it for themselves, and once it existed 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 fairly sure of this one.

A small prize. It only matters to people who hold secrets someone would probe for.

Who is paid. The keeper of the secret takes it willingly, so I assume people buy it for themselves, and a drug whose recipe is known can 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. Feeling another person's sensations as your own would be an entertainment industry of its own.

Who is paid. People would buy it for themselves, and since the method could be copied the owners of the stories, stars and channels people already follow 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. Judged by its own buyers, a mild jolt enjoyed as people enjoy a drink would be worth what the drinks trade is worth.

Who is paid. The users would buy it for themselves, and so simple a gadget 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 life story lived as experience rather than read would be a new medium to rival film and books.

Who is paid. Ordinary people would pay for each experience, the machine could be copied, and the studios that own the stories and the names people know 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 cap for an empty socket is a trifle that only owners of the implant need.

Who is paid. Implant owners would buy it for very little, and anyone can make a cap, 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 computer link inside the head would do what pocket devices do now but faster and always on, worth an industry of its own.

Who is paid. Ordinary people would pay for the implant and the service, and the firms that already make devices and run networks 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. Reliving a chosen memory at will is a pleasure and a keepsake, like a better photograph album.

Who is paid. People would buy it for themselves, and once the implant existed 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 fairly sure of this one.

A large prize. This names a person, but the implant behind it, a machine doing the work of a brain, would restore people whose brains had failed.

Who is paid. I judged the implant: patients and their families would pay, and the makers of medical implants 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. Trying on a chosen personality would be an industry of its own, part entertainment and part borrowed skill.

Who is paid. People would buy it for themselves, and since the method could be copied the owners of the stories, stars and channels people already follow 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.

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.

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 gadget that gives an altered state for fun would draw the kind of steady demand that 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. This names a person, but the training behind it, a learned way to get high on your own body, is a pastime for a few.

Who is paid. I judged the training: people would pay for lessons themselves, and any trained teacher could offer 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 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 small prize. Living as a chosen character is a single method of therapy among many.

Who is paid. Patients would pay for it themselves, and any therapist could offer 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 fairly sure of this one.

A small prize. Writing by thought is a convenience, since keyboards and speech already do the job.

Who is paid. Ordinary people would get it inside gadgets they buy, and once it works it is easy 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 fairly sure of this one.

A small prize. A rest cure in a made-up past is a comfort for the strained, close to a holiday.

Who is paid. People would pay for their own visits, and the leisure firms that already own parks, stories and well-known names 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 vast prize. A kept copy of a living mind answers the most basic wish of all, not to be lost at death.

Who is paid. I assume the copy can be woken or restored, which the description does not say. 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.

No prize. It is an ailment from too much time in a made world, not something anyone would buy.

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.

A large prize. Feeling another person's experience directly would be an entertainment and news industry of its own.

Who is paid. People would buy it for themselves, and since the method could be copied the owners of the stories, stars and channels people already follow 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.

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 vast prize. Loading a stored mind into a regrown brain is the restoring step of bringing a person back, which takes away the finality of death.

Who is paid. People would pay for themselves and their families, and once one firm had done it others could, so the hospitals and medical firms people already trust 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. Capturing all a person perceives and thinks for keeping answers the basic wish not to be lost at death.

Who is paid. I assume the capture is full enough to stand as a copy of the person, as the story intends. 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 large prize. Sharper concentration would lift the work of anyone who uses their head; the story bans it because it is forced on people, but I judged it as if taken by choice.

Who is paid. I assumed workers and students take it by choice, and a microbe can be grown by anyone once it exists, 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. Making sure a sleeper dreams is a small aid to good rest.

Who is paid. Sleepers would buy it for themselves, and it is easy 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 fairly sure of this one.

A large prize. Sleep on demand without drugs would be worth an industry of its own to the many people who sleep badly.

Who is paid. People who sleep badly would buy it for themselves, and the gear is simple enough for many makers 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 vast prize. Sending copies of yourself out to do the day's work would change how most people work and live.

Who is paid. People would buy blank bodies again and again, and once the copying was known the factories able to turn out blanks in bulk 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. Keeping a copy of a mind so the person can be brought back would take away the finality of death for anyone who could have it.

Who is paid. People would pay for themselves and their families, and once one firm had done it others could, so the hospitals and medical firms people already trust 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. Sending a mind between the stars is travel for those with somewhere far to go, not the saving of a life, so it is an industry and not a need of most people.

Who is paid. Travellers would pay for the passage, and whoever already owns the transmitters and the waiting bodies at each end would collect, since the sending 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 large prize. A computer in the head that helps and connects every soldier would change how an army fights.

Who is paid. Unlike the other brain links this one is issued to soldiers, so the government pays, and the firms that already hold army supply contracts 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 therapist who can enter and shape dreams could treat troubles of the mind that talk alone does not reach.

Who is paid. Clinics and therapists would buy the machine, and the makers of medical equipment who already sell to 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 small prize. Music sent straight to the brain is a new kind of earphone, a convenience.

Who is paid. Listeners would buy it for themselves, and players are easy for many makers 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 fairly sure of this one.

A large prize. Working out what a person is thinking from a scan would change how crimes are solved and secrets are kept, whether or not the person scanned agrees.

Who is paid. The scan is run and read by someone other than the person scanned, so I assumed police, courts and spy services are the main buyers, and since the software could be copied the firms that already supply them 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. Screens and sounds already carry information, so feeling it on the skin is a convenience.

Who is paid. People would buy it for themselves, and once it existed 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 fairly 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.

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 mesh joining the mind to computers would be an industry of its own.

Who is paid. People would buy it for themselves, and since the implant 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. This names a person, but the surgery behind it, wiring a pilot to an undersea machine, is a better set of controls where hand controls already do the job.

Who is paid. Firms that run the machines would buy it, and once one maker had the link 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 fairly sure of this one.

A vast prize. I took the faster learning to be of the same kind as the knowledge-loading helmets, which would replace years of schooling for most people.

Who is paid. Families and learners would pay for it themselves, and once one firm had built the gear others could copy it and many could write the lessons, 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. Helping autistic children manage daily life and learning would be worth a great deal to many families.

Who is paid. Families or their insurers would pay, and the makers of medical implants who already hold hospital trust 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.