Mercurial > thoughts
view org/ideas.org @ 80:f6a551af68ff
computer vision + toilet; spellcheck.
author | Robert McIntyre <rlm@mit.edu> |
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date | Sat, 28 Dec 2013 23:06:56 -0500 |
parents | 8e9e811d3f76 |
children | 8fa830f0bed4 |
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1 #+title: Big List O' Ideas2 #+author: Robert McIntyre3 #+email: rlm@mit.edu4 #+description: list of ideas from the last ~ 7 years5 #+keywords: aurellem ideas half-baked random6 #+SETUPFILE: ../../aurellem/org/setup.org7 #+INCLUDE: ../../aurellem/org/level-0.org8 #+babel: :mkdirp yes :noweb yes :exports both10 * Ideas12 This is a list of all the ideas I've had that I felt like writing down13 for the past ~ 7 years. Some of them could be practical inventions and14 are "just" waiting the that 95% perspiration to bring them to15 fruition, some are ideas for science fiction, and some are simple16 observations. Some are really only for my own personal notes and are17 not meant to be comprehensible. They are arranged roughly in reverse18 chronological order, with the most recent ideas at the top of the19 list. The ones at the bottom of the list are heavily influenced by my20 time at MIT.22 If you find some of these interesting and would like to collaborate on23 them with me or discuss them in more detail, I'd love to hear from24 you. You can email me at ideas@aurellem.org.26 If you want to use one of these ideas as your own and run with it,27 please feel free. I'd love to hear about it if you do.29 #+begin_quote30 There's no end to what a man can accomplish if he doesn't care about31 getting credit.32 #+end_quote34 - smart toilets :: Instead of using indirect measures like infrared35 detectors of the presence of a person, use computer36 vision to directly measure whether the toilet needs37 to be flushed. I think a lot of things will end up38 going this way as we get better computer vision.40 - validate chemopreservation :: chemopreservation is difficult to41 validate because it destroys the functionality of a brain, and42 brain simulation will take a long time to mature as a43 technology. However, one very powerful way to validate44 chemopreservation would be to have a person/animal learn45 something with high complexity such as a number or the solution46 to a maze, or a flashbulb memory. Then you preserve their brain47 chemically, slice it up, and read /that specific memory/ from the48 detailed brain scan. Much more difficult, but much more doable.50 - candy screw :: edible candy screw with candy nuts that you can screw51 as well.53 - better bibliography :: when writing a thesis or paper, have the54 bibliography not just be an opaque list of resources, but have it55 be a list of /summaries/ and /qualities/ that each paper has in56 the context of the paper being written. When examining a57 bibliography, I want to know if reading the papers in the58 bibliography are worth my time, and I also am probably also59 interested in exactly the things that are being discussed in the60 paper I'm reading. The bibliography is the perfect place to61 provide information about the referenced papers from the62 author's perspective. I will use this biographic form in my own63 thesis.65 - digital inter-library loan :: libraries at universities already do66 inter-library loans for books, so why not do the same for access67 to stupid paywalled digital papers? All the universities could68 allow access to articles for registered students to all the files69 available through any participating university. This could be70 achieved by sending requests through proxies at participating71 universities. Each university would decide who at the university72 can access the proxy network. Access to the proxy network could73 be made easy using something like http://libx.org/.75 - chess visual :: to show the vast size of the game trees considered76 by computers, show two people playing chess in a77 void. They are floating in space, and there is a78 simple chess board between them. Then, as they play,79 the game tree's they are considering are drawn80 behind him. The root of the tree starts centered in81 their heads or whatever they use to think, and the82 tree grows out from behind, never crossing the83 dividing plane between the two players. Each84 player's tree is a different color. As they grow,85 there are animations for pruning, etc. Eventually,86 they look like the hemispheres of a brain, wings,87 etc. A human's tree might occasionally have a long88 chain, while the computer tree would be more89 uniform. You could compare deep blue and a modern90 laptop. Use actual data when fighting two computers!92 - time verification :: some standard way to verify that some piece of93 data was recorded at a specific time. Might involve a time94 server, a key for each time period, something like that.96 - tamper proof gold bars :: [[http://www.tungsten-alloy.com/gold-plated-tungsten-alloy-bar.html][this site]] offers gold plated tungsten bars97 as "novelty" items. One reason to prefer coins is because they98 are much harder to counterfeit because there is less surface area99 to mass ratio. However, gold bars are still a great design100 because they can hold a lot of value in a small space. A gold bar101 could be given the same protections (and more) that gold coins102 have to offer by changing it into a "gold book", which would have103 hundreds of "pages" of gold bound together. This could be104 implemented with multiple steel rods going through the book which105 can be removed, or some more classier mechanism for holding the106 pages. The point is that the bar can be EASILY subdivided (and107 people would perform this test before buying), thus guaranteeing108 it's authenticity.110 - aurellem shirt :: I should make an aurellem star symbol tee-shirt.112 - high school science :: this is a lesson in scientific ethics. The113 goal is to calculate /g/, the local gravitational114 acceleration. The students are told that the textbook says it's115 /exactly/ 9.81 before they start the experiment. See how they116 doctor their results to get closer to the textbook value. It's117 neat because for any given school, /g/ is probably *not* exactly118 equal to 9.81, because that is just an average!120 - opencourseware subtitles :: there are ladies who type up lectures121 while they are being given. These recordings should be kept and122 given to OCW for subtitles. If the timestamps of keys are123 recorded, then it is easy to make subtitles.125 - screen locking timing :: you use your computer camera to see if you126 are sitting in front of the computer. If you are, then the screen127 will never lock. If you are, then the screen will lock with a128 30-40 second timeout. It's an extension of using inactivity to129 initiate the countdown, just with more information.131 - mirror toilet :: a toilet with a square basin made or mirror instead132 or porcelain. That way, you can see how good of a133 wipe job you have done / watch how your excretion134 system works.136 - test dummies :: why don't we clone anencephalic humans and use then to137 test /in vivo/ human organ systems and drugs? It138 would be ethical as long as there are women who are139 willing to host the clones, and it would be a140 tremendous resource for studying the human body. I141 see nothing wrong with it morally, since no one is142 suffering, and it stands to save many lives throughout143 more advanced technology.145 - X-ray telepresence :: given that a doctor is operating on a patient146 via telepresence, one cool things you can do is shine X-rays into147 the patient to view the insides during real time. If the system148 was coupled with a Bayesian model of the layout of the structure,149 and the x-rays were only fired whenever the uncertainty of the150 model reached a certain threshold, then the radiation damage151 and surgery risk could be minimized.153 - superfluid vascular system :: I wonder what would happen if you154 replaced the blood in a human with a superfluid. What would the155 physical dynamics be? Would the superfluid flow through the156 vasculature, or would it ignore it and travel through the cells,157 or something else entirely. Since superfluids need to be cold to158 retain their superfluidity, how would the dynamics change during159 perfusion of a superfluid, where the fluid gains and looses160 superfluidity as it goes deeper into the body and is cooled by161 superfluid from upstream. In summary there are two things to162 simulate 1.) replace all blood in human with superfluid163 instantly. 2.) perfuse superfluid into human.165 - projective guessing :: I think that we read and see things by166 making a really good guess about what we're expecting to see,167 and then searching for our guess in what we see. If it really168 doesn't match, then we start to make more guesses / analyze the169 image from first principles, but most stuff is projective170 guessing.172 - Intestinal flora maintenance :: why not inoculate babies at birth173 with "ideal" gut flora instead of whatever bullshit they174 naturally get, thus giving them optimal digestive/nutrient175 extraction capabilities. Might also be able to make their farts176 not stink for life, too.178 - server culture : mirrors :: make a distributed system where people179 can mirror the websites of people they like -- essentially cover180 the server costs of favored websites. This could make popular181 websites run at no cost. The system would require that the182 mirrored content be the same as the official source. Sort of like183 bit-torrent for websites.185 - map programming :: one problem with functional programming is that186 in order to remain functional, you have to pass up arguments up187 into each calling function to get the full range of behavior188 from the lower level functions. Normally people come to a189 compromise involving abstraction and sparing use of dynamic190 variables to configure runtime behavior. What would be the191 advantages of making a programming language where every function192 receives one argument, a map, which contains all the symbol193 bindings it would ever need? This map is passed on to all194 subordinate functions. This way, you could replace functions on195 the fly, and arrange for there to be sensible defaults,196 etc. Might cause more harm than good but is an interesting idea.198 - rest nest :: a small EEG device you would attach to your head when199 you go to sleep at night. ML algorithms would determine200 your particular sleep cycles. This would mostly be an201 alarm clock that you could give a time range, say202 7:00AM - 7:15AM, and it would wake you up during an203 ideal time corresponding to then end of one of your 90204 min sleep cycles. You would feel much more rested upon205 waking up, and would wake up faster. There might be206 some other uses for the EEG data as well.208 - image compression :: use a library like gimp or opencv to process an209 image to make it have less entropy, then store the reverse of210 those operations along with the compressed simpler image as a211 super-compressed image file (possibly accepting some212 losses). Trades file size for decompression time, and allows one213 to cheat by using information in gimp/opencv to compress the214 image.216 - fixed cryopreservation :: why not use a fixative to buy enough time217 to ramp up cryoprotectants to an acceptable level at room218 temperature? Then, the whole system can be rapidly cooled and219 vitrified. This method "severs the biological link" in that the220 fixatives are highly toxic, but current vitrification procedures221 do this anyway since there can be a lot of freezing damage.223 - dilated security camera :: a security camera that would capture224 full video footage of everything at 60fps but then decide to keep225 only every 1 frame every 5 seconds unless there's something226 "interesting" happening.228 - bitcoin wallet :: Part of "server culture", this would be something229 like "coin.your-domain.com" which would serve as230 your personal trusted access to your own bitcoins231 from anywhere.233 - libpay :: this would be a free library which would enable234 micro-donations to software projects and other projects,235 so that you could donate a penny to "emacs" and it would236 be automatically split up to every person who has ever237 contributed to emacs in proportion to the amount of238 community esteem, code quantity, bugs fixed, whatever the239 community decides. This might make it possible for240 programmers to live entirely off of free programming.242 - distributed graphics :: Browser based graphics-card accelerated243 distributed computing API.245 - pronouns :: use capital letters A-Z instead of pronouns. They solve246 pronoun referents and gender neutrality, are short to247 say, and you can encode useful information into the248 choice of letter. For example, instead of "Meetings249 shall be presided over by the president, unless she is250 absent." USE "Meetings shall be presided over by the251 president, unless P is absent." We already use this a252 little, since I and U are reserved for the subject and253 object respectively.255 - phone DSP :: software app that inserts an audio DSP between the256 input to a phone and the output. The DSP is delicious257 and configurable, and can allow men to make their258 voices deeper, etc. The app would allow you to hear259 your own voice as others hear it. Most people hate how260 their own voice sounds. The app would also allow one to261 immediately change the parameters of the DSP using good262 presets.264 - predestined body learning :: a good example of predestined learning265 might be the mirror neurons.267 - restaurant receipt :: use a carbon copy receipt instead of two stupid268 copies.270 - anti google glass :: glasses with mounted lasers and computer vision271 that targets the cameras in google glass and destroy them.273 - wearable towel :: towel with clasp, velcro, whatever, that allows274 one to wear the towel more securely than just275 wrapping it tightly and hoping for the best.277 - crossdressing :: Easiest way to disguise oneself as a woman is to278 wear a burka.280 - book-mode :: intelligent color highlighting for books and281 articles. It would disambiguate pronouns and involved282 references. For example, if "Rachael" as red, and "the283 blonde haired girl" refers to "Rachael", then "the284 blonde haired girl" would he colored red. Also, you285 could disambiguate multi part run-on sentences by286 highlighting each subcomponent. Maybe would also have287 applications to scientific reading.289 - Handheld light Rain measurement :: this would be a clear, teflon290 coated plastic disk with a camera underneath the disk. You would291 be able to hold the device out and it would measure the rate of292 accumulation of water droplets from fine mists and light rain by293 using computer vision to measure the diameters of the drops.295 - Big Brother Farming :: This would be a vision system that would296 individually monitor each plant and turn on water, etc to ensure297 maximum/uniform growth for each plant.299 - Discrete Faucet :: A faucet with discrete ticks instead of300 continuous.302 - Laser Circle :: take a glass microfiliment and shine a laser at one303 end at an oblique angle. It will make a perfect,304 large circle on the wall, converting a laser beam305 into a laser cone, preserving most of the energy of306 the laser.308 - Invisible Glass :: Take a container of liquid and embed a309 glass sculpture made out of glass that has exactly the same index310 of refraction and color of the liquid. Then the sculpture will be311 totally invisible in the container, and will only be revealed312 when the liquid is drained. The container might be a fancy313 wine/spirit bottle or an hourglass.315 - Caterpillar people :: A race of caterpillar like creatures gains316 intelligence after eons of predation by birds, etc. These317 caterpillar creatures still undergo metamorphosis into a large318 butterfly-like creature. The metamorphosis process turns the319 caterpillar's brain into mush and reforms it into a minimal,320 dumb, truly insect-like mind, completely destroying the person321 the caterpillar was. The society develops all sorts of customs and322 religious interpretations of the metamorphosis. It is viewed as323 good and natural by some since it is part of their life cycle and324 necessary to propagate the species, as only the butterflies can325 mate. Some think that the butterflies are still the same person326 because they have the same soul, even they no longer posses the327 memories or personality of the original caterpillar. Some see the328 butterfly form as the "true form" of the species, since the329 butterflies can fly, mate, and are beautiful. Many make a big330 deal out of the fact that 1-2% of the caterpillar's mind is331 actually preserved in the butterfly. Some see it as a terrible332 tragedy and argue that the caterpillars should try to stop the333 metamorphosis by technology. Practically, some very important334 members of society undergo hormone therapy and/or surgery to335 prevent metamorphosis so that they can live longer as themselves.337 This is a continuation of Marvin Minsky's ideas about pain being338 something that preserves our bodies while destroying our minds,339 something that is a remnant from our too harsh animal days that340 hasn't caught up to the fact that we have very complex brains341 now. It's a worst-case scenario about a maladaptive genetic342 legacy. Also, it's inspired by "There She Is!!!", which makes a343 compelling point about homosexuality by introducing a second344 gender characteristic (bunny/cat, male/female), which makes345 homophobia look very silly. Here, our own biological legacy of346 pain and death is made to look like the tragedy it is through the347 lens of the the caterpillar people.349 - relationships as a business :: [[http://thedailywtf.com/Articles/Up-or-Out-Solving-the-IT-Turnover-Crisis.aspx][Turnover-Crisis]] is an excellent talk350 about the "culture of quitting," which is about better business351 by letting people go instead of keeping them around past their352 "apex". Focuses on information transfer. Cool idea of an alumni353 network, which for relationships would be a group of satisfied354 ex-lovers, who would recommend new people your way, and who might355 consider coming to you again, refreshed from their time away with356 new stories/experiences. I should look for examples of this and357 how they worked out.359 - coffee with tea :: /rlm-tea/ contains 2% sugar, 10% cream, and 20%360 dylan coffee. /dylan coffee/ contains 5% sugar,361 20% cream, and 10% rlm-tea. Start your mornings362 with recursion!364 - psychic crystal :: in a science fiction story, this would be an365 object that is very easy to move physically but is extremely366 difficult to move with telekinesis.368 - http://betsofbitco.in/ :: what a great place for an AI/person to369 prove themselves as a good predictor. I wish this could be370 automated.372 - true reflection :: don't forget about that mirror in the student373 center!, it's two mirrors at right angles, like staring at a374 corner of a room. The light reflects so that it shows you what375 you actually look like, instead of your mirror image.377 - remote control wasp :: use computer to drive wings with remote378 power/logic.380 - encrypted email phone book :: public (distributed?) database of381 email->private-key pairs, to enable automatic encryption.383 - universal eye color :: every equivalent creature will see each384 others' eyes as black -- it's universal. Even if the creatures385 see in radio waves, and their eyes are 2m long pieces of jagged386 metal, when those creatures look at each other, they will see387 black, the absence of light and color (since it's being absorbed388 by the sensor array).390 - intelligent microwave :: it learns where the hot nodes of its fields391 are, and uses them to evenly heat any food item. It has an infared392 camera or something to keep track of how hot the food is. That way,393 you don't get bowls where the edges are boiling, while the center is394 still frozen. Requires a little bit of intelligence/vision, since395 the exact pattern of heating totally depends on the exact shape of396 the food. Wouldn't need a carousel, and wouldn't need a timer,397 just a desired temperature. Could also detect ice, and automatically398 defrost the parts which are frozen. Might be able to work much399 faster since it can avoid overheating; might have problems with400 heating the insides of thick things, might need a weight sensor too.402 + Would be much cleaner than other microwaves, since food would403 "sputter" and splash liquid much less.405 + Throw in some SIFT+R processing to match previously cooked foods406 and learn the exact heating profiles for things that have been407 cooked before -- it can get faster the more it's used.409 - compression :: brain-aware image compression algorithm411 - Credit card proxy :: would be a company which works like paypal412 except for real world transactions414 - Flesh pillow :: a pillow like the arm or torso of a human, complete415 with simulated temperature, bones, and heartbeat.417 - super screw :: a screw which has only one or two threads and instead418 uses compression to fit into a hole (the whole shank419 of the screw is split into multiple pieces to420 accomplish this; the tip is a point, then the middle421 bulges out and gets compressed when screwed in.423 - light filter :: (like light tweezers) to mechanically separate424 fluids with different index of refraction426 - chalk eraser project :: maybe make a directional eraser, for easy427 release of chalk dust, like fur, and how it likes to rest in a428 certain direction.430 - silver socks :: socks laced with silver for the antimicrobial431 properties.433 - UROP :: magnet gear/metal teeth tape435 - rod of moses :: device to distill urine through evaporation and436 easily dispose of urea crystals for use in desert --437 produce drinkable water.439 - UROP :: Make the LED in line with the flow for the micro injector, so440 that it may transmit maximum flow. Motor that changes441 distance of internal magnet from windings depending on442 desired speed so as to obtain maximum power efficiency.444 - lottery scraper :: web scraper which monitors various lotteries,445 looking for "special" gimmick changes in the rules (like 4x446 winnings on Wednesdays) and computes expected value...448 - Memristiors novel design :: make an evolutionary algorithm to make449 old stuff using all four basic circuit elements.451 - Conductive concrete :: concrete that has embedded metal fibers so452 that it can conduct electricity.454 - little bitty melting pot :: might be useful for some types of455 manufacturing/3D printing -- how small can an induction melter be456 made, for example.458 - power strip/timer programmable combination :: meh460 - algorithms :: which learn what their inputs are and in what order,461 and can adapt to changing circumstances -- they462 remember previous arguments and adapt so as to respond463 to different connections.465 - true pure tones :: hear a true pure tone by direct stimulation of the466 nerves of the ear468 - mechanical analogue to the electrical op-amp :: would be an object469 with two levers -- you pull on one lever and the other moves the470 same way, no matter what's in the way or what it is driving. This471 analogy could be useful to teach op amps to people.473 - paper folding device :: make it convenient to fold lots of papers in474 various ways.476 - concrete epoxy :: epoxy with sand/ some other solid material.478 - light capacitor :: suspend some ball of material with a high index479 of refraction and shine light into it so it gets stuck -- would480 the light stay trapped forever? Could you build up unlimited481 quantities of light inside the sphere (which could then be482 released slowly by frustrated internal reflection?484 - movie screening :: Movies always are too long at first. One way to485 shorten them ``scientifically" is to record blink rate during the486 move and then remove / shorten the frames of the parts in which487 there are a lot of blinking (average this over multiple people)488 better yet, put it online and do it across thousands of people. I489 got this from youtube in which there is an episode of kill bill490 which is composed entirely of the parts in which people had their491 eyes closed. slogan: want to make a movie people can't take their492 eyes off of? Just take those parts out!494 - optimize an article :: capture reading of a scientific article via495 screen capture while people read it, then use it to make the496 article better. like the movie-pruning idea.498 - super reading program :: teaches people the ideal mental mask to499 apply during reading so as to read very fast.501 - explosive thermite epoxy putty :: one part would contain the rust,502 one part the aluminum.504 - reading comprehension :: use the above screen capture routine to505 make a quiz program that constructs questions about the content506 you seemed to gloss over while reading. could be easy if the pdf507 came with embedded questions. Dylan: automatically generate508 word-cloud about the parts you found most interesting; help509 others who read the same stuff by drawing attention to the510 interesting parts.512 - hard sword :: make a samurai sword, but use osmiridum instead of513 martensite for the cutting part; it should be a better514 sword.516 - close range wireless :: use the induction technology used to517 recharge electric toothbrushes with no metal links to send data518 without any metal at all!520 - reading :: is a form of synsethesia522 - DNA printer :: A machine which translates the text eg, "ACTGAC" into523 actual DNA525 - black generator :: ferro-fluid magnetic field suspended micro526 generator to make electricity528 - alcohol battery :: alcohol/fluid flow powered battery530 - folding razor blade sword ::532 - perfect pitch :: learn perfect pitch using another sense in533 combination (sight or touch)535 - kaleidoscope projector ::537 - razor blade de-sharpener :: for guilt free disposal539 - bricks :: filled with luminescent plant material541 - bio metallic structure :: metal grids with seeds inside, which grow542 together and form a durable biological matrix. The metal543 substrate delivers water. (maybe use plastic instead of metal?)544 Dylan: enrich plants with inorganic compounds; electrical545 interfaces in cellular plant matter => remote-controlled546 photosynthetic/bioluminescent structures.548 - conducting extracellular matrix :: to allow better control of549 organic systems and an enhanced nervous system.551 - cross-modal memory hashing :: a way to retrieve memories more552 robustly.554 - flossing thimble-guards :: (these actually exist)556 - rules + lattice learning :: integrate lattice learning with rules by557 generating hypothetical examples559 - wooden refrigerator :: to give food a better taste Dylan: like560 barrels for wine, or planks for salmon. Maybe just have "flavor561 planks" for your pre-existing fridge. Need to mitigate effect of562 temperature on volatility?564 - radioactive transmutation molecule by molecule :: create precious565 metals or something else economically advantageous.567 - crowd preservation :: inoculate food with tons of harmless568 bacteria so that there's no room for bad bacteria as a method of569 preservation571 - old school preservation :: Pasteur - style holding jar with siphon572 as a way to store liquids at room temperature indefinitely w/o573 refrigeration.575 - restaurant policy :: Throw rude people out of restaurant as a matter576 of course -- make ambiance much better.578 - clean windows :: make something that mixes soap with fire hydrant579 water (and reduces the pressure a bit) and use it580 to clean windows of buildings.582 - ocarina :: make an ocarina out of pure silver584 - fire pen :: pen which burns words on to the page, thus never needing585 any ink. Is there a way to make it runnable from the586 human's energy?588 - website to design your own soda :: and label, and have it mailed to589 you / sell it from your own online store.591 - solar panels :: that float on the ocean593 - handcuffs with more than two cuffs (3?) :: great for daisy chaining594 people, binding them to environment, etc.596 - vector based SOUND files :: like the pictures but with SOUND. codify597 sound in a language with enough symbols so that it can describe598 everything and encode it in that. would be like going from speech599 to text or smtg. Could also store sound as an image of the600 wavefront encoded as a vector image.602 - Mouse :: with a horizontal scroll wheel in addition to the vertical603 scroll wheel605 - logic maintenance system for big institutions :: to make sure the606 things they are thinking about doing are not retarded608 - http://www.regulations.gov/ :: cool site610 - genetically engineered glowing fruit :: sell seeds?612 - memory slide :: IF memories are encoded using particular sensory613 impressions, what happens if the sensory organ614 itself changes? those memories would become615 inaccessible. maybe this is why we can't remember616 much from our childhoods. also, could this happen617 throughout life as well? Could S remember stuff from618 his childhood?620 - make a completely indestructible phone :: no moving parts or display621 you should be able to slam it around all you want, and it will622 just work. brutally simple. aerogel around the battery, minimal623 interface - never gets too hot, and can be dropped into water. no624 holes -- uses field effects for everything from the buttons to625 inductive charging and data transfer.627 - midi to ocarina "tabs" program :: (online website? buy ocarinas from628 it too)630 - 3d printing with sound pulses (or just patterns) :: like the 8.03631 lecture633 - lighter flint on spring :: make hot, throw it at something, and it634 makes sparkles!636 - nuclear energy :: Rebranding New+Clear Energy with informational637 campaign and public debate forum to enforce its638 transparent and open nature. France needn't be the639 world leader in nuclear energy. (Dylan)641 - bubbles :: Engineer a material which has both ductility and high642 surface tension to make the "third"643 minimal-surface-energy solution to a bubble suspended644 between two equal-diameter rings. (Solutions are645 cylindrical catenary curve, two separated half-bubbles,646 and a double-cone)648 - Textbook whose content can be varied continuously :: alter level of649 difficulty, rigor, diction, emphasize crossover with certain650 other discipline, etc. Content generated dynamically from651 knowledge base, along with questions that are moreover altered to652 guide knowledge acquisition. Motivation: One book of653 knowledge. /One./656 ** From Jacob's idea list658 - Roommate-canceling headphones: uses roommate's laptop mic to seed659 noise cancellation alg in your headphones (would this660 work?). -Update on sound canceling headphones that take feed from661 tv: how about ones that cancel people talking on the phone by662 receiving the phone signals and playing inverse sound663 waves. #signalprocessing ~jcole@mit.edu665 - ClackerAlert -- tells if you slam the keys too hard using sound data666 (and speed/jerkiness data)!.Prevents RSI ~jcole@mit.e668 - Panic Pin :: separate pin that you can tell someone if forced to669 identify your PIN (idea from idea about credit cards)