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User: rebelcool

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  1. not terribly likely for awhile on Supersonic Flight Without The Sonic Boom · · Score: 1
    supersonic aircraft are a pain. The concorde for example, stretches 11 inches while in flight - maintenance duties on them are expensive, as is the large amount of fuel they require.

    On planes such as the 747, this is offset by the large load of passengers you can carry. In a supersonic jet however, you are limited by the shape of the plane. The concorde carries very few passengers as its fuselage is VERY narrow. At this point in time, its simply much too expensive to fly a fleet of supersonic passenger jets.

  2. booms are continuous on Supersonic Flight Without The Sonic Boom · · Score: 2, Informative
    although, most times, these planes take off far from their mission).

    A sonic boom isn't a one time deal when you crack the sound barrier. after you break it, the boom is continous as you fly over the ground. Thus if you travel supersonically over the entire width of texas, then the entire width of texas for that corridor your plane passes over will hear/feel the shockwave.

  3. thats silly. on Self-Parking Car Available In Japan · · Score: 1
    are you going to complain about the existance of the automatic transmission as well? Or how about turn signals... its less lazy to stick your arm out the window to point where you're going.

    I for one am a crappy parallel parker. I'm a great driver.. i just suck at maneuvering my car into a tight spot parallelwise. I would welcome this any day.

    Or what about those darn public transportation riders... actually letting other people drive FOR them!

  4. Re:Yuck on Self-Parking Car Available In Japan · · Score: 1
    Because they require their cars to slide and the wheels to spin. It's the fastest way of getting from point A to point B.

    I'm thinking this wouldn't be such a great idea on everyday roadways. The point of traction control and ABS isn't so jackass drivers can run around like rally racers. Why would you even mention that? That is the stupidest example i've yet read. The point of ABS and ETC are to head off the consequences unpredictable accidents and road hazards before the driver has to. Both have saved hundreds of lives.

    Oh let me guess, now you'll use the 'dumbing down the driver' argument and ignore the whole hundreds of saved lives thing. Cause you know, rally racer skills in the average driver are a better thing to strive for than a technical solution that works.

  5. this is college on MIT Roofnet · · Score: 1

    do you realize how much a ladder costs? and then theres the pain of hauling it when you move... try fitting it into your dinky 84 honda.

  6. Yes. on NTT Verifies Diamond Semiconductor Operation At 81 GHz · · Score: 4, Informative
    There are lab created diamonds and have been for awhile, but they're fairly low quality and generally only useful as cutting tools. Wired had an article a couple weeks ago about one company that aims to change that, who have developed a method of creating diamonds out of a sort of plasma rain in a chamber that is almost impurity free.

    DeBeers is shitting a brick over it too, because that means its nearly impossible to tell a diamond from the ground from a lab one, except the lab one is even purer. The good part of this is the tech industry has far more muscle and clout than DeBeers does. DeBeers is truly an evil company sown on the blood of africa and putting them out of business would do the world a favor.

    In fact, the only way for this technology to become realistic is for large scale lab diamond growing like I mentioned above. Its still many years off.

  7. will scale, somewhat on MIT Robot Walks On Water · · Score: 4, Interesting

    The scale of water bugs goes from .5" to 10", its more of a function of keeping the surface area of the 'legs' in proportion with the weight and balance of the rest of the body.

  8. or the web application most likely on Is Linux as Secure as We'd Like to Think? · · Score: 3, Insightful
    I develop alot of backend web apps and its surprisingly easy for an enterprising individual to pass bad data through forms, and if the app doesn't check the incoming data properly, and simply assumes its coming from a legit source, you're going to have bad behaviors.

    There was a story on kuro5hin a few months ago about this, where a guy figured out a way to enter his own price for a product on an electronics website and was ordering hardware for less than what the page said it cost. And got away with it. This kind of hole is scarily prevalent i've found, as alot of backend developers are very lazy and inexperienced people.

    I think this is whats meant by 'applications' security. The box itself may be locked down well, but its taking advantage of the open services in ways the developers never intended.

  9. Re:Dorms the breeding grounds?? on Windows Is 'Insecure By Design,' Says Washington Post · · Score: 1

    I thought it odd too. A hub? You'd think someone this anal would crap over the inefficient use of bandwidth a hub has. It's just a troll anyway.

  10. uhm... on Say Goodbye To Your CD-Rs In Two Years? · · Score: 1
    its pretty standard to accelerate materials testing with special chambers that add heat, UV light and what not in extreme amounts to something. Then you can extrapolate from there.

    Do you think they sit around for a few thousand years to measure the half lives of radioactive elements too?

  11. DNA is very convenient on World's First Game-Playing DNA Computer · · Score: 1
    The way cells work is very computational in nature. You have DNA which is comprised of certain sequences of ACTG which are called codons, that are essentially assembler mnemonics. These codons stand for each amino acid, and a couple of special ones that tell it to stop reading, start, etc. The DNA stand is pulled through a structure (ive forgotten the name of it..bio class was awhile back) which reads the codons and sends out calls for amino acids, which then bind together to form proteins. Then the proteins are packaged by other cell structures and leave the cell. Proteins can be thought of as data packets as they go from cell to cell and tell the nucleus in them what to do next.

    So basically what you can do is write your own DNA strands and let existing cellular structures act on them to get the results you want. If you used other molecules, you'd have to create the read structures, the method of passing information around (proteins) and so on.

  12. Re:DNA based computer used to solve TSP on World's First Game-Playing DNA Computer · · Score: 2, Informative
    Yes and no. It may indeed be true that you can't solve it in less than O(N!). Theres alot of problems similar enough to travelling salesman that if you can provide such a proof that you can't do it in less than N! (or a proof that shows you can), then those problems will fall in line as well.

    If indeed it can be shown the problem may not be solved in less than N!, then the problem becomes hardware to solve. This is why DNA and quantum computing will be handy because of their inherent parallel nature, in very tiny sizes.

  13. The battery is huge. on iBot Self-Balancing Mobility Device FDA Approved · · Score: 1
    Both batteries weigh 10.5 kg. I don't think id want a laptop that uses that.


    Good page with specs

  14. its actually pretty cheap. on iBot Self-Balancing Mobility Device FDA Approved · · Score: 1

    Medical equipment is outrageously expensive - a similar discussion on FARK had one wheelchair bound participant in a fairly ordinary powerchair who had spent $17,000 on it, and then another $4,000 for a ventilator. There are powerchairs which retail for more than this one.

  15. many universities on Higher Education Committee Releases Report on P2P · · Score: 2, Informative

    have legal services available to students. UT-Austin, for example, will represent students in civil matters for no charge.

  16. well, yeah. its fry's. on Fry's Electronics - Selling Linux... Or Not? · · Score: 4, Informative

    fry's is a great place to find cheap odds and ends and assorted hardware. Of course they compensate by not hiring anyone who knows anything. Fry's is the candy store for someone who knows what they're doing. Why would you expect more?

  17. no, not really. on Disposable Digital Cameras Have Arrived · · Score: 1
    Ever taken a picture where someone walked in front of you just at the wrong time? Or the camera slipped slightly in your hand when you pressed the shutter? Or the flash was way brighter than you thought?


    Granted, alot of things that are 'wrong' with a picture can't be seen until later. But the people this is aimed at likely won't care about under/over exposure issues.


    There are times however when I've taken a picture that I *know* was bad the instant i pressed the shutter.

  18. totally. I like this guy. on Linux Journal Interview With Brian Kernighan · · Score: 5, Insightful

    Very practical. He wants to use the computer as a tool. Not a propaganda platform. Windows is fine and dandy for some applications, Unix for others. It all depends on what you're trying to do.

  19. I wouldn't know. on 2191.78 Years for the RIAA to Sue Everyone · · Score: 1
    I wasn't around on the 4th, either :)

    Seriously though, I read the statement in an article on CNN. I forget the analyst group.

  20. july 4th on 2191.78 Years for the RIAA to Sue Everyone · · Score: 1

    one analyst group that monitors this stuff attributed the dip in users to the fact it was the 4th of july weekend and people were out doing other things.

  21. you've missed something on The Failures Of Desktop Linux · · Score: 1
    there will be no reason to run or develop for windows exclusively.

    Incorrect. It takes time to develop software for multiple platforms. And time is money.
    Remember a few years ago when linux was a supported platform for many upcoming PC games? How many are there today? Next to none that will be both coming out on windows and linux, because linux has such a puny and unprofitable market share.

    If I ran a business and was interested in mass marketing my software, why would I spend 50% of my time developing for a platform with .01% of the share? I wouldn't. Neither will any right thinking business. That is unless the linux community is willing to pay 10 times the price (yeah, right).

    people will make money by selling support and installation/integration/customization work.

    Do people still honestly believe this? How many linux companies who tried this approach have failed now? How many more need to fail before its well understood this does not work. And think about it: What home user whats to buy a damn support contract for their home computer? How user-shitty is your software if it requires an engineer to come out and fix it whenever it breaks?

  22. sure on Nikon D2H: Digital Camera + 802.11b Option · · Score: 1
    its an interesting and expensive toy, but it fills a niche market. I'm not really sure why this is on slashdot.

    I mean, you don't see mentions of $1000 macro ring flashes on here.

  23. Their next legislative move: on RIAA Now Targets Pirates' Parents · · Score: 1

    Lobbying to make it legal to hire men named Guido to come break your grandmother's knee caps for 'stealing' the latest Christina Aguilera song.

  24. difficult on Diebold Voting Systems Grossly Insecure · · Score: 1
    The interface would be the most difficult part to do. It's something that truly needs alot of research and input from ALL of the public, not just a few guys sitting around their computers.

    Off the top of my head, here's people that the interface would have to take into account:

    The illiterate, or very low reading ability.

    People with limited sight.

    People with limited or no english reading ability.

    People with no experience with electronic interfaces of any sort. Even touch screen, or simple buttons may be confusing for many.

    Those who distrust the computer system to accurately record their vote. Some kind of print-out system is a must.

    In essence, before such a system should be put into use, it should be tested (perhaps with mock elections of sorts) with people who fit all these descriptions, to figure out how to make a system the easiest and most accurate to use.

  25. yeah right! on Canada Splits Local Phone, DSL Services · · Score: 1
    AT&T used to charge over a quarter a minute for long distance. This was way back when 25 cents was worth alot more money.

    Service? The service was crap because AT&T controlled everything. So you wanted a repair done, might take weeks. At least today you have a choice if you hate the company.

    The problem most countries have when they de-nationalize a service is they don't do it right. You can't simply declare 'well you're not longer nationalized' and pretend that things will get better. For it to work right, you have to do that, and then split the company apart into competitors. Most dimwitted countries fail to accomplish part B.