Home and everyday life

A small prize. A charged fence keeps animals in and people out, which is useful but narrow.

Who is paid. Farms and guarded sites buy it, and wire with a current through it is simple for anyone to supply.

A model's 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 large settlement on the seabed would open new living space, though few would need to live there.

Who is paid. Unlike a town inside a building on ordinary land, the dome and seabed works shelter everyone at once and no resident could be charged singly for them, so I assumed a government pays and the big building firms that already hold such contracts collect.

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

A small prize. A door that opens itself is a convenience for shops and busy buildings.

Who is paid. Shops and building owners buy it, and the firms that already fit and service doors in buildings collect, since the mechanism is easy 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 whole town inside a building is a new way of housing and serving a community.

Who is paid. Residents buy or lease the homes and shops inside, as they would in any large development, and since others could put up such a structure the developers and landowners who already hold the sites 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. Sheltering a whole city from weather is a public work on the scale of an industry.

Who is paid. No citizen could be charged singly for the roof over everyone, so the city pays, and the large construction firms that already win such contracts collect.

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

A vast prize. A room that delivers every need by machine would free its occupant from housework and errands, whatever the story thinks of the life that results.

Who is paid. Occupants pay for the room and its services, and no single firm could keep the idea to itself, so the appliance makers, builders and delivery networks that already reach every home 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. Opening a door by voice saves carrying a key, which is a convenience.

Who is paid. Households buy it and any lock maker can build 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 makes coffee, which ordinary heat already does well.

Who is paid. Households buy it, and the story has it sold freely, so I assumed any appliance maker may buy the radioactive source and build the same thing, 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 small prize. A nappy that says when it is wet saves parents some checking.

Who is paid. Parents buy it, and the signal is easy to add, so the nappy brands that already fill the shop shelves 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. Housing a whole town with its work and services in a single structure is a building project on the scale of an industry.

Who is paid. Residents buy or lease the homes and shops inside, as they would in any large development, and since others could put up such a structure the developers and landowners who already hold the sites 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 glass-roofed promenade is a pleasant shared space inside a giant building.

Who is paid. The building owner pays for it, and anyone can build a glass roof, so the developers who already hold the building 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 world wholly built over houses a great many people, but it is ordinary city building repeated everywhere.

Who is paid. Households pay for homes in it, and since anyone can put up buildings, those who already own the land 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 pipe that lights itself saves a match, which is a small convenience.

Who is paid. Smokers buy it and any pipe maker can add an igniter, 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. Showing which seats are empty helps a theatre fill up a little faster.

Who is paid. Theatre owners buy it and any electrical firm can fit it, so no seller keeps much.

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

A small prize. A watch that never needs setting is a small improvement on a watch.

Who is paid. Wearers buy it, and receiving a time signal is easy for any watch maker to add.

A model's 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. Plates that stay put on the table matter only where things slide about, as on a ship in flight.

Who is paid. I assumed travellers and crews buy them, and a plate with iron in it is simple for anyone to 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 small prize. A small spyglass is a handy tool for looking at things some way off.

Who is paid. People buy it for themselves, and any maker of lenses can produce 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. Stopping outside noise getting through would be wanted in most homes, far beyond the real headphone version; I assumed it quiets a whole home and not just a patch.

Who is paid. I assumed it is fitted to keep noise out of a home, so households buy it, and once the method of opposing noise is known many firms could make it, so no seller keeps much.

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

A small prize. It is a children's game, valued as play.

Who is paid. Parents pay, and though the game is built to need a lot of gear, any toy maker could make that gear, 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 tower sealed off from the city is a luxury retreat for a few rich households.

Who is paid. Rich households buy places in it, and since others could build the same, developers who already hold land and money 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. Spreading parks evenly through a town is a pleasant plan, but it is a layout and not a new thing to sell.

Who is paid. A city government pays to lay the town out this way, and the plan is free to copy, so the ordinary builders and landscapers who do the work collect.

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

A large prize. A machine that turns raw food into finished meals would take over daily cooking, a large part of housework though not all of it, and the real machines so far do less.

Who is paid. I assumed a home machine, so families buy it, and the appliance makers who already reach every kitchen would copy each other 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. Ordering from a panel saves a restaurant some of its serving work, though the food must still be carried out.

Who is paid. Restaurants buy the ordering system, and many firms can build such a system, so the saving passes to restaurants and diners.

A model's 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. Shoes for crossing soft ground serve a narrow group of walkers and workers.

Who is paid. Households buy them and any footwear maker can produce wide shoes, 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. The description gives only a soft glow, so I judged them as lamps for decoration and not as a way to light everything without power.

Who is paid. People buy them for the home, and I assumed the crystals are dug from a few places and cannot be made, so whoever owns those places 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 haircut at home without a barber saves a small regular errand.

Who is paid. I assumed a home device, so people buy it for themselves, and other appliance makers could copy the cutting helmet.

A model's judgement, not 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. Swimming in a floating ball of water is a thrill for visitors, not a need.

Who is paid. I assumed resorts and pleasure grounds buy it to draw visitors, and once gravity could be controlled at all, many firms could build such a pool.

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

A small prize. Clearing tobacco smoke from sealed cabin air is a narrow comfort for crews.

Who is paid. Ship operators buy it and many firms can make air filters, 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. Drying off with warm air instead of a towel is a convenience.

Who is paid. People buy it for the bathroom, and a blower is simple for any appliance maker to build.

A model's 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 shade against harsh sun is a simple comfort.

Who is paid. People buy it for themselves, and a heat-proof screen is easy for anyone to make.

A model's 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 private island that floats is a luxury for the very rich.

Who is paid. Rich families buy it, and the shipyards and marine builders who already make large floating structures 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 hut that goes up and comes down quickly suits campers and work crews.

Who is paid. I assumed campers and travellers buy it, and folding walls are easy for many makers to produce.

A model's judgement, not 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 flat panel that glows without wasted heat cuts the power bill for lighting everywhere, which changes a whole industry's costs.

Who is paid. Homes and firms both buy lighting, and once the method is known many makers can produce the panels, so buyers keep nearly all the saving.

A model's 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 lighter that never needs fuel is a small convenience for smokers.

Who is paid. Smokers buy it, and I assumed the radioactive source is as freely sold as the lighter itself, so any maker of small gadgets could copy it 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 small prize. A room that does every bathroom job by itself is a comfort, since people already wash without it.

Who is paid. Households buy it, and it is easy to copy, so the firms that already make bathroom fittings 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 that sets itself from a distant clock saves a small task.

Who is paid. Households buy it and any watch maker can build 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. Matching room air to each guest's home world serves only hotels with visitors from other worlds.

Who is paid. Hotels buy it, and the firms that already fit heating and air systems into buildings could add 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. Doing without a front desk saves a hotel a modest part of its costs.

Who is paid. Hotels buy the booking system, and many firms can write such a system, so the saving passes to hotels and guests.

A model's 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. Putting the shower, basin and toilet in a single booth saves space but does what bathrooms already do.

Who is paid. Home owners buy it, and it is easy to copy, so the makers and fitters of bathroom fixtures 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 cigarette with its own striking tip saves a match, which is a small convenience.

Who is paid. Smokers buy it, and it is easy to copy, so the tobacco firms that already sell cigarettes 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 automatic shave saves a little time each morning.

Who is paid. I assumed a home device, so people buy it for themselves, and other appliance makers could copy 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. Clothing that blocks some harmful radiation matters only where such radiation is common.

Who is paid. Households buy it, and once the cloth exists any clothing maker 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. An ashtray that works without gravity serves the few who smoke in space.

Who is paid. Those smokers buy it and any maker can build 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. A home whose layout can be changed spares some rebuilding, but it is a feature of a house and does not make housing cheaper or more plentiful.

Who is paid. Home owners pay, and once the flexible material is known the builders and developers who already hold land and customers 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 flying ball game is an entertainment for players and watchers, not a need.

Who is paid. Players and spectators pay, and nobody can own a sport, so any club or maker of small flying machines can take part.

A model's judgement, not 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. Light with almost no wasted heat cuts the power bill for lighting everywhere, which changes a whole industry's costs.

Who is paid. Homes and firms both buy lamps, and once the method is known many makers can produce them, so buyers keep nearly all the saving.

A model's 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 squeezable pouch to drink from is a plain drinking vessel.

Who is paid. I assumed people buy it for themselves as they would a cup, and anyone can make a pouch, 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. Trousers that pad the legs to look muscular are a vanity item.

Who is paid. Households buy them and any clothing maker can copy them, so no seller keeps much.

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

A small prize. Cutting the grass without a person saves a chore for those with lawns.

Who is paid. Households buy it and many firms can make a small garden machine, 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 lid that opens by itself is a minor convenience.

Who is paid. Households buy it and anyone can make such a box, 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. Heating food in moments changed how kitchens work and became an industry of its own.

Who is paid. Households buy it, and the method soon became easy to copy, so the appliance makers with factories and shop space 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. The description gives only the shape, so I assumed these are the long cool-running tube lights the name suggests, which cut the power bill for lighting shops, offices and homes.

Who is paid. Homes and firms both buy them, and many makers can produce them, so buyers keep nearly all the saving.

A model's judgement, not 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 booth that washes and grooms you saves some time, but it does what bathrooms already do.

Who is paid. Home owners buy it, and it is easy to copy, so the makers and fitters of bathroom fixtures 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. Decorating a breathing mask is a small pleasure added to gear people already own.

Who is paid. Households buy the masks and paint, and any maker can 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 fairly sure of this one.

A small prize. A cigarette that lights itself saves a match, which is a small convenience.

Who is paid. Smokers buy it, and it is easy to copy, so the tobacco firms that already sell cigarettes 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 mesh garment that also serves as a carrying net is a handy piece of clothing.

Who is paid. Households buy it and anyone can make mesh clothing, 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. Turning lamps off in empty rooms saves a little power.

Who is paid. Home owners buy it, and the sensor is a cheap part many firms make.

A model's 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 house that truly cooks, cleans and does the chores would free most households from daily housework, and the real thing so far does far less than this promise.

Who is paid. Families buy it, and no single firm could keep the idea to itself, so the appliance makers and house builders who already reach every home 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. Fresh nappies dropped at the door spare parents an errand.

Who is paid. Parents pay for the service, and the firms that already run delivery fleets and customer lists collect, since anyone with aircraft could offer 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. Warming frozen meals in moments changed home cooking and is worth an industry.

Who is paid. Households buy it, and it is easy to copy, so 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. Doing every step of washing up with no human help removes a daily chore for most homes, more than the real machines do.

Who is paid. Households buy it, and it is easy to copy, so 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 small prize. A clock that speaks the hour is a minor convenience.

Who is paid. Households buy it and anyone can make it, so no seller keeps much.

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

A small prize. A watch in a ring is a small change in how a watch is worn.

Who is paid. Wearers buy it, and any watch maker can fit a small timepiece into a ring.

A model's 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 house that feeds, cleans and entertains the family would free most households from daily housework.

Who is paid. Families buy it, and no single firm could keep the idea to itself, so the appliance makers and house builders who already reach every home 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 plain bucket, however vital its errand is in the story.

Who is paid. Households would buy it and anyone can make a bucket, 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. Chairs and beds that fit whoever uses them add comfort to furniture people already buy.

Who is paid. Households buy them and any furniture maker can copy them, so no seller keeps much.

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

A small prize. Indoor light that feels like daylight is a comfort for city dwellers.

Who is paid. Households buy it, and I assumed it is a lighting fitting many firms could make, so no seller keeps much.

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

A large prize. A room whose walls conjure lifelike worlds would be home entertainment worth an industry, beyond what real headsets deliver.

Who is paid. Households buy it, and it could be copied, so electronics and entertainment firms with factories and catalogues 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 kitchen that cooks meals when told would take over daily cooking in most homes, far beyond the real voice gadgets.

Who is paid. Households buy it, and it could be copied, so 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 not very sure of this one.

A small prize. Being woken on time by a machine is a small convenience.

Who is paid. Sleepers buy it, and a timed alarm is something any maker can produce.

A model's 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. Washing and removing hair in a single step saves a little time in the bathroom.

Who is paid. Shoppers buy it, and the recipe is easy to copy, so the soap brands that already hold the shop shelves 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 softer, warmer mattress is a comfort.

Who is paid. Sleepers buy it, and any bedding maker could fill a mattress with a soft fluid.

A model's 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 block that shows a stored photograph is a keepsake.

Who is paid. Households buy it and many firms can make it, so no seller keeps much.

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

A large prize. A factory-built home running on sunlight with no hookups would change what housing costs to run and where it can stand.

Who is paid. Households buy it, and its parts can be copied, so home builders and equipment makers with factories and land 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 sprayed base layer that a designer shapes into a garment is a novelty way to dress.

Who is paid. I assumed it is sold as a can that is used up with each wearing and bought again, so although the spray is easy to copy, the brands that already hold the shop shelves collect, as with the skin sprays.

A model's judgement, not 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. Gloves applied as a spray are a novelty way to dress.

Who is paid. I assumed it is sold as a can that is used up with each wearing and bought again, so although the spray is easy to copy, the brands that already hold the shop shelves collect, as with the skin sprays.

A model's judgement, not 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. Walls that glow are another way of lighting a room; the description does not promise light that runs cool or cheap.

Who is paid. Households and builders buy them, and many lighting makers could copy 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. Having toast buttered for you saves a moment at breakfast.

Who is paid. Households buy it, and it is a simple kitchen machine any appliance maker could build.

A model's 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 filling a whole wall is home entertainment on a scale worth an industry.

Who is paid. Households buy it, and screens are easy to copy, so the electronics 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. A home needing no outside power, water or waste service would change what housing costs to run and where it can stand.

Who is paid. Households buy it, and its parts can be copied, so home builders and equipment makers with factories and land 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 garment that looks see-through or solid by viewing angle is a fashion novelty.

Who is paid. Households buy it, and once the cloth exists any clothing maker 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 mat that carries its rider from room to room is a convenience, and a real help to the few who cannot walk easily.

Who is paid. Households buy it, and I assumed it could be copied by many makers of small machines, 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 cooling mist gives a brief moment of freshness, which is less than lasting relief from heat.

Who is paid. Shoppers buy it, and the spray is easy to copy, so the toiletry brands that already hold the shop shelves 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 massaging bath is a luxury comfort.

Who is paid. Home owners buy it, and the jets are easy to copy, so the makers and fitters of bathroom fixtures 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 passage people can leave by but not return through is a narrow security fitting.

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

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

A small prize. A garment whose see-through quality changes with distance is a fashion novelty.

Who is paid. Households buy it, and once the cloth exists any clothing maker 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 chair grown as a living plant is a novel way to get ordinary furniture.

Who is paid. Households buy it, and I assumed an ordinary plant trained into shape, which any grower could do, 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. Glass that dims itself replaces curtains, which is a convenience.

Who is paid. Households and builders buy it, and it is easy to copy, so the glass makers with factories and trade ties 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 display of ever-changing chance images is an ornament.

Who is paid. Households buy it and many firms can make it, so no seller keeps much.

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

A small prize. A ball that rolls about on sunlight is a toy.

Who is paid. Households buy it and any toy maker can build 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. A panel showing a convincing outdoor view is a comfort for windowless rooms.

Who is paid. Households buy it, and a wall-sized screen is easy to copy but comes out of costly screen factories, so the electronics makers that already own them collect, as with the wall-sized television.

A model's judgement, not 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 from afar what the childcare machine sees gives parents some peace of mind.

Who is paid. Households buy it and many firms can make a screen and camera, 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 safe that can destroy its papers serves the few who hold secrets.

Who is paid. Firms and offices with secrets buy it, and any safe maker can add a way to burn or shred the contents.

A model's 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 spot where nobody can overhear is handy in offices and public rooms, but it is a convenience.

Who is paid. Offices and meeting places buy it, and cancelling sound with opposing sound is a known method many electronics makers could 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. Unlike a private corner for talk, this wipes out noise over a wide area, which would let factories, airports and roads sit quietly beside homes.

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

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

A small prize. A patch of privacy for talk is handy in offices and public rooms, but it is a convenience.

Who is paid. Offices and meeting places buy it, and cancelling sound with opposing sound is a known method many electronics makers could 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 small prize. A sealed home at the top of an immensely tall tower is a luxury for a few.

Who is paid. Rich households buy it, and I assumed more than a lone tower could be built, so developers with land and money 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. Real grass underfoot indoors is a matter of taste.

Who is paid. Home owners buy it, and any grower of turf can 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. Chairs and beds that float without legs are showpieces.

Who is paid. Home owners buy them, and strong magnets are available to any furniture maker.

A model's 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. Screening callers at the door is a handy convenience for a home, not a need.

Who is paid. Households buy it, and many firms could build a door-answering machine, 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 seat that carries a person around by itself would be a personal vehicle worth an industry.

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

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

A small prize. A child-sized stand-in for testing suspect toys serves a few safety inspectors.

Who is paid. I assumed government inspectors buy it, so the firms that already supply testing gear to them 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. Tinting the skin a chosen colour is a matter of fashion.

Who is paid. Shoppers buy it, and the spray is easy to copy, so the cosmetics brands that already hold the shop shelves 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. Real grass underfoot indoors is a matter of taste.

Who is paid. Home owners buy it, and any grower of turf can 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. Throwing a page overhead for comfortable reading is a convenience.

Who is paid. Households buy it and any projector maker can build 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. An overhead picture of the sky is a comfort for indoor spaces.

Who is paid. Households and building owners buy it, and overhead screens of that size are easy to copy but come out of costly screen factories, so the electronics makers that already own them collect, as with the wall-sized television.

A model's judgement, not 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 mattress filled with water is a matter of comfort and taste.

Who is paid. Households buy it and any bedding maker can produce 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. A crystal model of the nearby stars is an ornament and a teaching aid.

Who is paid. People buy it for the home, and any skilled craftsman or model maker could produce such a thing.

A model's 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 tube of glowing algae gives a dim light for use underground, where a lamp would do better.

Who is paid. People buy or fill them for themselves, and anyone can grow algae in a glass tube.

A model's 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 home that reshapes itself to its occupants' moods is a striking feature of a house, but it does not make housing cheaper or more plentiful.

Who is paid. Households buy it, and once shown it could be copied, so home builders who already hold land and buyers 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. Sensors that let a home learn and adapt to its occupants are the working part of the mood-reading house, a feature that does not make housing cheaper or more plentiful.

Who is paid. Households buy them with the house, and once shown they could be copied, so home builders who already hold land and buyers 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. Locked into a fixed form, this house has lost the reshaping that made its kind special and is an ordinary home.

Who is paid. Households buy it as they would any house, and since houses are easy to build the builders and developers who already hold land 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 small prize. A sculpture for contemplation matters only to the few initiates who value it.

Who is paid. Those initiates pay for it and any metalworker can make it, so no seller keeps much.

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

A small prize. A living chair that shapes itself to the sitter is a comfort and a curiosity.

Who is paid. People buy it for the home, and since living stock multiplies once any of it is sold, no originator can hold it, so the breeders and furnishing shops that already hold stock and showrooms 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. Choosing the colour of a lamp is a matter of mood and decoration.

Who is paid. People buy it for the home, and many lamp makers can 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 an ordinary wardrobe, a plain piece of household furniture.

Who is paid. Households buy it and any furniture maker can build 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. A small wearable gadget with several functions is a convenience; the description says little more.

Who is paid. Households buy it and many firms can make a small gadget, 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. Dining beneath the sea is a treat for visitors.

Who is paid. Diners pay for the meal, and I assumed others could build the same on another coast, 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 pouch for saved water matters only to people crossing deserts.

Who is paid. Desert travellers buy it as part of their kit, and a pouch is easy for anyone to make.

A model's 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 cooler you can carry through the heat would matter to everyone who works or travels outdoors in hot places.

Who is paid. Commuters buy it, and I assume the cooling parts are easy to copy, so many makers would compete the gain away.

A model's judgement, not 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. Keeping moisture inside a tent matters only to people living in deserts.

Who is paid. Desert travellers buy it, and a plastic seal is easy for anyone to make.

A model's 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. Catching the moisture in your breath matters only to people in deserts.

Who is paid. Desert travellers buy them, and nose plugs are simple for anyone to make.

A model's 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. Lights that float in the air are decoration.

Who is paid. Home owners buy them, and once floating gadgets can be made at all, many makers could build a lamp.

A model's 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 wardrobe that tidies itself saves a little effort.

Who is paid. People buy it for the home, and other furniture and appliance makers could copy 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. A finely made globe is an ornament and a mark of rank.

Who is paid. The story has them given to officials, but I assumed such globes are also sold as ornaments, and any skilled craftsman could make them.

A model's judgement, not 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 useful cloak for desert life is everyday clothing for people in dry places.

Who is paid. Desert dwellers buy it, and any tailor can make a cloak.

A model's 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 air tube for a buried tent is survival gear for a few desert travellers.

Who is paid. Travellers buy it and anyone can make a tube, 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 fortified cave settlement with stored water serves a few desert communities.

Who is paid. The people who live there pay by building it themselves, and anyone with a cave and labour can do the same, so no seller keeps much.

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

A small prize. A suit that cools and saves body water matters to the few who live or work in deep desert.

Who is paid. Desert dwellers and travellers buy it, and I assumed skilled 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. A shelter that recovers water from breath matters to the few who live or travel in deep desert.

Who is paid. Desert dwellers and travellers buy it, and I assumed skilled 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. A hovering seat is a luxury piece of furniture, whatever the hovering device might be worth elsewhere.

Who is paid. Households buy it, and I assumed the hovering part can be copied, so any furniture maker could sell it and none 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 lamp that hovers where it is put is a handy light, whatever the hovering device might be worth elsewhere.

Who is paid. Households buy it, and I assumed the hovering part can be copied, so any lamp maker could sell it and none 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 tube carrying recovered water is a part of a desert suit that matters to the few who need such suits.

Who is paid. Desert dwellers and travellers buy it with the suit, and anyone can make a tube, 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. Breathing underwater without tanks would delight divers, but divers are a niche.

Who is paid. Divers buy it for themselves, and I assume that once the material that draws air from water is known, other gear makers could make it too.

A model's judgement, not 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 tray that floats round a party is a novelty for hosts.

Who is paid. Hosts buy it, and once floating gadgets can be made at all, many makers could build a tray.

A model's 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 small container for drinks.

Who is paid. People buy it for themselves, and anyone can make a drinking vessel.

A model's 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 hood that keeps talk private is handy for sensitive calls, but it is a convenience.

Who is paid. Offices and people with private business buy it, and a sound-blocking hood is simple 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 small prize. Glasses that tint with the light are a better pair of sunglasses.

Who is paid. Households buy them and many eyewear makers can copy them, so no seller keeps much.

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

A small prize. Seats that drift about a bar are a novelty for drinkers.

Who is paid. Bars buy them to draw custom, and once floating furniture can be made at all, many makers could 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. Self-closing socket covers are a small safety help for parents.

Who is paid. Parents buy them, and they are simple plastic parts any maker can produce.

A model's 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. Field glasses that focus themselves are a small improvement for watchers of birds and games.

Who is paid. Hobbyists buy them, and many makers of lenses and cameras could build 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 small prize. An instrument for multisensory shows serves a few performers.

Who is paid. Performers buy it, and I assumed instrument 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. Lenses that dim where glare is strongest are a better pair of sunglasses.

Who is paid. Households buy them and many eyewear makers can copy them, so no seller keeps much.

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

A large prize. Machines that keep a flat in repair with no workers would cut a main cost of running housing.

Who is paid. The flat is let to a tenant, so the landlord pays, and the firms that already supply building equipment and service contracts would collect once the machines were common.

A model's judgement, not 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 false view of the outdoors makes a windowless room nicer.

Who is paid. Households buy it, and a wall-sized screen is easy to copy but comes out of costly screen factories, so the electronics makers that already own them collect, as with the wall-sized television.

A model's judgement, not 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 home that is bred and not built would cut the cost of housing, assuming it is cheap to raise.

Who is paid. People buy it as a home, and since living stock multiplies once any of it is sold, no originator can hold it, so the growers, builders and landowners that already hold stock, sites and the trade of housing 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. Housing built for the very old is an industry of its own wherever many people live long.

Who is paid. Old people and their families pay, and such homes are easy to copy, so those who own suitable buildings and land 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. Folding many uses into a compact room is a convenience for people short of space.

Who is paid. Households pay for it and any builder or furniture maker can do 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. A broom that sweeps by itself saves a chore in a small flat.

Who is paid. Households buy it and many firms can make a small cleaning machine, 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. Clothing sprayed straight onto the body is a novelty way to dress.

Who is paid. I assumed it is sold as a can that is used up with each wearing and bought again, so although the spray is easy to copy, the brands that already hold the shop shelves collect, as with the skin sprays.

A model's judgement, not 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 door that charges a coin to open is a way for a landlord to collect small fees.

Who is paid. I assumed landlords buy it and that any lock maker can build 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. Wall screens that pass for real windows are a comfort for windowless rooms.

Who is paid. Households buy them, and wall-sized screens are easy to copy but come out of costly screen factories, so the electronics makers that already own them collect, as with the wall-sized television.

A model's judgement, not 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 plain clothing that does not change, and in the story it is the dull choice beside living fabrics, but plain clothing still dresses most people.

Who is paid. Everyone buys clothes for themselves, and ordinary cloth can be made by a great many firms, 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. Truly quieting loud neighbours would be wanted in most homes, which is worth an industry; I assumed it quiets a whole home and not just a patch.

Who is paid. The noise described comes from neighbours, so households buy it, and once the method of opposing noise is known many firms could make it, so no seller keeps much.

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

A small prize. See-through prison clothing is a minor security aid; unlike the fashion version it is bought for prisons.

Who is paid. The government pays as prison keeper, and the cloth is easy to copy, so firms that already 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. Where the air is badly polluted, everyone who goes outside needs a mask, which is an industry of its own.

Who is paid. People buy masks for themselves, and they are simple enough that a great many makers compete.

A model's 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. Reading the hour from lights under your skin is a novelty way to wear a watch.

Who is paid. Wearers pay for it, and the device is simple enough that many makers and clinics could offer 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. A window filter that sets brightness and colour replaces curtains, which is a convenience.

Who is paid. Households and builders buy it, and it is easy to copy, so the glass makers with factories and trade ties 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 house that turns to face any direction is a novelty for a few buyers.

Who is paid. Households buy it, and a pivot is easy to copy, so the builders and developers who already hold land 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 small prize. Suggesting colour schemes for a room saves a little thought when decorating.

Who is paid. Households buy it and many firms can make such a device, 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 cup that never holds a drop is a little easier to clean.

Who is paid. People buy them for the kitchen, and I assume the coating can be copied by other makers once it is on sale.

A model's 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 block of flats that hovers a little above the ground gives its tenants nothing much that a grounded block does not.

Who is paid. A developer pays for it as a showpiece, and the large builders who already put up such blocks 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 large prize. Unlike a slick cup, a toilet that needs no water would save a great deal of water and piping, and would bring clean toilets to dry places.

Who is paid. Home owners buy it, and I assume the coating can be copied, so the firms that already make and fit bathroom fixtures 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. Keeping floating adverts out of the home removes an annoyance in a world that has them.

Who is paid. People buy it for peace at home, and once the trick of blocking the images is known any electronics maker could copy 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 a style of music and dance, enjoyed by its fans.

Who is paid. Fans pay to watch or to play, and nobody can own a style of music, so any performer may take it up.

A model's 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 blow-up screen for an altar is a cheap fitting for a place of worship.

Who is paid. Churches pay for it as organisations, and inflatable screens are easy for anyone to make.

A model's 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 game table with moving solid-looking pieces is a pleasant toy, not a need.

Who is paid. Families buy it as a game, and once the display exists many toy and screen makers could build the same thing.

A model's 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 mask that signals low standing is a piece of costume with a niche use.

Who is paid. Households buy it and any craftsman can make a mask, 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 pipe instrument played by squeezing a bag serves a few musicians.

Who is paid. Musicians buy it and any instrument maker can build 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. Blocking floating adverts removes an annoyance in a world that has them.

Who is paid. People buy it for peace at home, and once the trick of cancelling the images is known any electronics maker could copy 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. A living bed is a comfort and a curiosity, and many would dislike sleeping on an aware creature.

Who is paid. People buy it for the home, and since living stock multiplies once any of it is sold, no originator can hold it, so the breeders and furnishing shops that already hold stock and showrooms 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. Towers that sing in the wind are civic art, pleasant but not needed.

Who is paid. A city government pays for it as public art, and the ordinary architects and builders who put up towers 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. Boots that soften a hard landing are a modest gain for walkers and workers.

Who is paid. Wearers buy them, and the springy sole can be copied, so any of the many footwear makers can sell them 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 fairly sure of this one.

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

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

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

A small prize. Waking to a chosen smell is a novelty version of an alarm clock.

Who is paid. Households buy it and any gadget maker can build 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. Water passages between buildings serve only residents who swim, which is a niche.

Who is paid. I assumed a city pays for them as public works, so the building firms that already hold such contracts collect.

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

A small prize. Glasses that go dark at the sight of danger are a joke comfort, since they hide the danger and do nothing about it.

Who is paid. Wearers buy them, and other makers of eyewear could copy them once they were on sale.

A model's 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. Guessing which drink someone would enjoy is a pleasant extra on a drinks machine.

Who is paid. I assumed a vending machine, so firms buy it for their premises, and the vending operators that already place machines collect.

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

A small prize. A chatty personality adds nothing useful to an automatic door.

Who is paid. Building owners buy doors, and the feature is easy to copy, so firms that already fit doors 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 an ordinary towel, however useful the story finds it.

Who is paid. Households buy it and anyone can make a towel, 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 sofa cushioned with water is a matter of comfort and taste.

Who is paid. Households buy it and any furniture maker can produce 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. A resort where guests live inside a staged adventure would be a holiday industry of its own.

Who is paid. Holidaymakers pay, and the staging can be copied, so the firms that already own resort land, well-loved stories and trusted names 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 moment of weightlessness on a ride is a thrill for visitors.

Who is paid. Amusement parks buy the ride, and any ride builder could copy the design, so the parks and their visitors keep the gain.

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

A small prize. Tracking sleep and nudging the sleeper awake is a mild convenience.

Who is paid. Households buy it and many firms can make a bed sensor, 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 watch face printed for a while on a sleeve is a novelty way to tell the time.

Who is paid. Households buy it and many firms 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 whole town inside a building is a new way of housing and serving a community, and its self-rule changes who governs, not what is sold.

Who is paid. Residents buy or lease the homes and shops inside, as they would in any large development, and since others could put up such a structure the developers and landowners who already hold the sites 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 booth that cleans the body with no water at all would cut what homes spend on water and plumbing, which is more than a comfort.

Who is paid. Households buy it, and I assumed it can be copied, so the firms that already make and fit bathroom fixtures 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 trunk that follows you everywhere is a great convenience for travellers, but it is still luggage.

Who is paid. Travellers buy it, and I assume the thinking wood is rare and cannot be made by others, so whoever holds that wood 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 sealed block for messages to the far future is a keepsake.

Who is paid. Households and clubs buy it and any metalworker can make it, so no seller keeps much.

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

A small prize. A cheap pod to sleep in suits travellers who want only a bed.

Who is paid. Travellers pay by the night, and the pods are easy to copy, so the owners of well-placed city buildings 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 suit that records hits makes practice battles fairer, which serves trainers and players only.

Who is paid. In the story an army school uses it for drills, so the state pays, and the firms that already hold contracts for training gear collect.

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

A large prize. Heating food in moments with radio waves is worth an industry of its own, here in a handheld form.

Who is paid. Households buy it, and unlike a full oven from the established appliance makers this is a handheld gadget that many firms could make, so no seller keeps much.

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

A small prize. Walls that move with the music are decoration for a venue.

Who is paid. Club owners buy them and many lighting firms can 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 fairly sure of this one.

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

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

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

A small prize. A pod to sleep and live in is cheap lodging for those who will accept little space.

Who is paid. Lodgers pay by the stay, and since pods are easy to copy those who already own the buildings and sites collect.

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

A small prize. Glowing patterns under the skin are body decoration for those who want it.

Who is paid. Households pay for it, and I assumed many studios or clinics could offer it, so no seller keeps much.

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

A small prize. Stacked sleeping pods are cheap lodging for those who will accept little space.

Who is paid. Lodgers pay by the stay, and since pods are easy to copy those who already own the buildings and sites collect.

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

A small prize. A cupboard where cleaning robots wait is a minor building detail.

Who is paid. Home owners pay for it as part of the house, and any builder can make a storage nook.

A model's 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. Seeing your pace on your shoe is a nicety for keen runners.

Who is paid. Runners buy them, and the display is easy to add, so any of the many shoe makers can sell them 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 fairly sure of this one.

A small prize. A cap that leaves the scalp smooth replaces the razor for those who want a bare head.

Who is paid. People buy it for themselves, and I assume other makers could copy the cap once it was on sale.

A model's 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 shirt that shows your heartbeat in colour is a fashion novelty.

Who is paid. Wearers buy it, and the sensor and the colour-changing cloth could be put together by many clothing 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. A bin that sorts and squashes rubbish saves a household a small chore.

Who is paid. Households buy it, and many appliance makers could 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. The story gives no detail, so I assumed a tool or service for designing clothes, which is a niche.

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

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

A small prize. The feeling of floating is a pleasant novelty for rest.

Who is paid. People buy it for the home, and I assume other furniture makers could copy it once it had been seen.

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

A small prize. Picking off insects around the house is a convenience, judged here as a household gadget.

Who is paid. People buy it for the garden, and the aiming and the beam are parts many electronics makers could put together.

A model's 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 that grows itself would cut the cost of building homes, assuming it grows cheaply.

Who is paid. People buy it as a home, and since living stock multiplies once any of it is sold, no originator can hold it, so the growers, builders and landowners that already hold stock, sites and the trade of housing 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 story's world bans it, so it is a hazard nobody may lawfully buy or plant.

Who is paid. Nothing is lawfully 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 small prize. Leaves that serve as tissues replace a cheap paper product.

Who is paid. People buy it for the home or garden, and since living stock multiplies once any of it is sold, no originator can hold it, so the nurseries and garden shops that already hold stock and shelves 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 carpet that eats its own dirt saves some cleaning of floors.

Who is paid. People buy it for the home, and since living stock multiplies once any of it is sold, no originator can hold it, so the breeders and furnishing shops that already hold stock and showrooms 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 protects riders and others at risk of a fall, which is a niche.

Who is paid. Riders buy it for themselves, and inflating cushions are well understood, so many makers can sell 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. Packaging that reports on its contents helps a food seller track deliveries a little better.

Who is paid. Food firms buy the boxes and many packaging firms can add a chip, 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. Living in a storage locker is cheap housing of last resort for a few.

Who is paid. Tenants pay for the space, and the lockers are easy to build, so those who already own the storage sites collect.

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

A large prize. Clothing that truly keeps a person cool in the heat would matter to everyone who works or travels outdoors in hot places.

Who is paid. Wearers buy it, and I assume the cooling parts are easy to copy, so many clothing makers would compete the gain away.

A model's judgement, not 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 airtight house saves energy, but the stale air it traps takes back much of the gain.

Who is paid. Households buy it, and sealing a house is easy to copy, so the builders and developers who already hold land 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 small prize. Walking anywhere inside a small room is mainly useful for exercise and games.

Who is paid. People buy it for the home, and a moving floor could be built by many makers of exercise machines.

A model's 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. Leg extensions for longer strides are sports gear for a few enthusiasts.

Who is paid. Households buy them and any sports gear maker can build them, so no seller keeps much.

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

A small prize. A shared desk you can type and draw on is a modest office convenience.

Who is paid. Offices buy it, and a touch surface built into a desk is 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 fairly sure of this one.

A small prize. Connecting the fridge to a network adds a convenience to something every home already has.

Who is paid. Households buy it, and the smart parts are easy to copy, so the appliance makers who already sell fridges to every home 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 home squeezed into leftover space is a niche form of cheap housing.

Who is paid. Households pay for the space, and whoever already owns the building collects because anyone can fit out a nook.

A model's 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 building project that plans and drives its own construction would change the cost of building.

Who is paid. Developers pay for it, and I assume the directing system is software others could write once it had been shown to work, 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 bare room adds little of its own, since the value to its occupant lies in the virtual world and not in the box.

Who is paid. Occupants pay for the space, and a plain box is easy to build, so whoever owns the land it stands on 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. A sticker that survives walls built to clean themselves serves a few street artists.

Who is paid. Street artists buy it, and I assumed the glue can be copied, so no seller keeps much.

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

A small prize. Lenses that give reptile pupils are a cosmetic novelty.

Who is paid. Households buy them and many lens makers can copy them, so no seller keeps much.

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

A small prize. A pod to nap in while travelling is a convenience for tired travellers.

Who is paid. Travellers pay by the stay, and since pods are easy to copy those who already hold space in busy transit hubs 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 shelter that pops up quickly is useful camping and expedition gear.

Who is paid. Households and travellers buy it and many firms can make it, so no seller keeps much.

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

A large prize. Very cheap mass housing would change what it costs to shelter people, though the cells here are grim.

Who is paid. I assumed a government pays to house people who cannot pay, so the building firms that already hold such contracts collect.

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

A small prize. Waking to a smell is a novelty version of an alarm clock.

Who is paid. Households buy it and any gadget maker can build 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. Wall covering that changes colour with mood is decoration; unlike the reshaping house it alters only colour.

Who is paid. Households buy it, and I assumed the covering can 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 small prize. A compact tool with many functions is a convenience.

Who is paid. Households buy it and many firms can make it, so no seller keeps much.

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

A small prize. Finding the right size without trying clothes on saves shoppers some bother and shops some returns.

Who is paid. Clothes shops buy the scanner, and many equipment makers can build a measuring device.

A model's 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 bed that floats with nothing under it is a showpiece.

Who is paid. Rich buyers pay for it, and strong magnets are available to any furniture maker.

A model's 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 pillow that plays songs is a minor comfort.

Who is paid. Sleepers buy it, and any maker of bedding or speakers can produce 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. See-through trousers are a fashion item for those who want them.

Who is paid. Households buy them, and once the cloth exists any clothing maker 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. A pay toilet on wheels serves people where water and plumbing are short.

Who is paid. Users pay each visit, and the trucks are easy to copy, so the operators who already run fleets and can sell the recovered waste 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. Getting through a crowd faster is a convenience for city dwellers.

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

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

A small prize. A private sleeping nook inside a shared room helps people in crowded housing, but it is a simple piece of kit.

Who is paid. Unlike a pod hotel, this is a product the sleeper owns, so people buy it themselves, and any tent or furniture maker can produce 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. A chair grown to fit its owner is a novel way to get comfortable furniture.

Who is paid. People buy it for the home, and since living stock multiplies once any of it is sold, no originator can hold it, so the breeders and furnishing shops that already hold stock and showrooms 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.