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User: orkysoft

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  1. Re:To stem the statistical comments: on Cheap Blood Clot Detection Device · · Score: 1

    That is called Bayesian statistics.

    P(B|A) = P(A|B)P(B) / ( P(A|B)P(B) + P(A|notB)P(notB) )

    P(B) = chance of a clot being present
    P(A|B) = chance of detecting a clot, given that a clot is present
    P(A|notB) = false positive
    P(notB) = 1 - P(B) = chance of there not being a clot

    The interesting value is P(B|A), which is the chance of there being a clot, given that one is detected.

    I haven't RTFA, so I don't know whether it tells whether the 98% accuracy mentioned is P(A|B) or P(B|A). If it's the former, I remain unconvinced, because if the clots are very rare, even a modest false positive rate will make it fairly useless.

    Of course I hope it really is useful, and will save lives.

  2. Re:Fixed! on Critical Security Hole in Linux Wi-Fi · · Score: 1

    I must have misread it then. If your point is that no distribution silently installs updates out of the box, then you might be right (I don't know all distributions). I don't know why Ubuntu doesn't, it seems like a good idea for most computer users. (Those who would want to disable it care enough about it to bother fixing the setting, but I think it would be best if the user was informed of the setting during or after installation.)

  3. Re:Fixed! on Critical Security Hole in Linux Wi-Fi · · Score: 1

    Start Menu > Settings > Software Properties > second tab > third checkbox

  4. Mod Parent Troll! on What MSN, Google, Yahoo and AOL Know About You · · Score: 1

    Keep Your Parents Off the Internet!

  5. Re:and cookies too on What MSN, Google, Yahoo and AOL Know About You · · Score: 1

    The default Google cookie doesn't expire for 30 years

    Oh noes! It's a Twinkie!

  6. It's scary! on Does the Windows Logo Mean Anything? · · Score: 0

    But only if you're a laser printer...

  7. Re:good for car parts, still lousy for complex stu on The Modern Ease of 3D Printing · · Score: 1

    Yeah, especially the mirrored screw holes are a blast!

  8. Re:A joke? on Top 10 April Fools Stories · · Score: 1

    Both slashdottit links have vote=1 as the query string, which means that the server cannot distinguish on which slashdottit link you're clicking, so yes, I would guess that the Digg-like feature is an April Fool's joke.

  9. Re:which farm animal represents 48% of america? on 48% of Americans Reject Evolution · · Score: 1

    Actually, the evolution of complex organs has been researched for a long time now, and it has been found that yes, partial functionality (e.g. light-sensitive cells instead of a full-blown eye with retina and lens) is better than no functionality (no light sensitivity).

  10. Re:No exceptions on Newton's Second Law, Revisited · · Score: 1

    It doesn't look like they're going to settle...

  11. Re:The Real Roomba Killer on Dyson Preparing a Roomba Killer? · · Score: 2, Funny

    Won't it just level the building?

  12. Re:Dinosaur extinction breaks my brain on Some Dinosaurs Made Underground Dens · · Score: 2, Insightful

    Dinosaurs is what we call the reptiles that went extinct about 65 million years ago.

    That should answer your question why all the dinosaurs went extinct. They're defined that way.

  13. Re:I've had experience with a few services... on How Do You Re-Sell a Domain Name? · · Score: 1
  14. Re:Why I always got in trouble in high school on Scientifically Accurate Sci-Fi for High-Schoolers? · · Score: 1

    Actually, it's a comedy ;-)

  15. Re:Hard Sci-Fi on Scientifically Accurate Sci-Fi for High-Schoolers? · · Score: 1

    I agree wholehartedly. He wrote Behemoth (actually three books in one volume), about a group of mammoths surviving to this day. Very good stories, and very readable. And he wrote Evolution (which might be a little controversial in the US ;-) ), which is a series of linked short stories about "a day in the life of" several (distant) ancestors of homo sapiens.

  16. Re:anyone see this is scary and downright stupid? on South Korea Drafting Ethical Code for Robotic Age · · Score: 1

    The only sentient beings are us flesh & blood humans. There's a reason I, Robot is a science fiction novel. All a robot is is just a bunch of metal parts with a CPU just like my computer. No computer can "think" for themselves - we program the input and output. There is no such thing as a computer program "becoming sentient."

    So far. There's nothing that proves that it's impossible to create sentient beings using computational devices.

    <attempt at reductio ad absurdum using straw robots which are non-sentient>

    Some would argue no as their program does not make them sentient. Well what happens if I load the "sentient" program into my PC, car, tank, or fighter air-craft? Does it become "sentient"? If I delete the program, does it "die?"

    It's the brains, stupid! Not the body. So far, there is no program to make a computational device sentient. But without sentience, all those devices, whether they have arms and legs or wings and wheels, are just tools. With sentience, they would be sentient, and thus deserve rights, just like you or me. I'm not saying they need exactly the same rights as humans should have, though.

  17. Re:15 Billion Dollars A Year At Stake on Novell Releases OO–OOXML Translator · · Score: 1

    Funny, I made a similar argument in a recent post, and got accused of making a pirate's rationalization! Granted, the accusation was by an AC, but still...

    Anyway, I remarked that this same exact mechanism is what keeps Photoshop so popular, despite it being very expensive for non-professional users. FWIW, I never pirated MS Office or Adobe Photoshop, but lots of people seem to do so, and in doing so, they are strengthening those companies' market positions, yet making themselves vulnerable to lawsuits from these same companies. Sounds like a pretty stupid thing to do to me.

  18. Re:holy shit some scientists are idiots on Sun May Be Warming Both Earth and Mars · · Score: 1

    Yeah, and they measured the temperature and CO2 levels on Mars for the last couple hundred millennia as well!

  19. Re:Does Vista have anything we need? on Is Vista a Trap? · · Score: 1

    No, they're reinventing it poorly, because they do not understand it.

  20. Re:I had the same idea! on Simple Computation Using Dominos · · Score: 1, Funny

    Well, if you've watched the videos, you'd have seen that your points (1) and (2) have no merit, except for very small values of "shitload".

  21. Re:Aren't there laws against this? on Software Deletes Files to Defend Against Piracy · · Score: 5, Insightful

    Also, a question, could a user backup up their home directory, install this crap software, and then restore their home directory and continue using the software?

    I don't think so. At the time the software "decides" to delete the user's files, it also "knows" that it is a pirated version, and that the serial number is invalid (that triggered the deletion). Hence, it also "knows" that it shouldn't allow itself to be unlocked from the demo version.

    I think this is a very dangerous step: what if there was a bug that caused the software to delete your files without a pirated serial being entered?

    Besides, if the author sells activation keys, he knows who bought which one, and thus whom to sue when one of those keys gets posted on warez sites. Unless he doesn't use online activation with arbitrary keys, but instead has an algorithm in his program that determines the validity of the key. That's just asking to be cracked.

    Also, piracy tends to be a powerful weapon against your competition: you might not make money from the lost sale, but (1) your competitors won't either (2) the pirates gain familiarity with your software, and are more likely to choose it when placed in a situation where they can't use pirated software, or recommend it to friends, and your competitors don't gain this advantage. See also: Microsoft Windows/Office, Adobe Photoshop.

  22. 19 Months? on Windows Vista - Still Fresh After 19 Months? · · Score: 3, Insightful

    So, has he actually been able to run Windows for 19 months without reinstalling? That's amazing!

  23. Re:ebooks will probably a mess on 12 Crackpot Ideas That Could Transform Tech · · Score: 2, Insightful

    Free textbooks wouldn't really be free, the price would just become "invisible" to parents. They'll still pay for them, of course, through taxes, but it also gives the publishers the opportunity to raise prices unnoticed.

  24. Re:ebooks will probably a mess on 12 Crackpot Ideas That Could Transform Tech · · Score: 1

    You mean all that trouble tracking which chapter is which in the new edition?

  25. Re:Space is what keeps us from screwing other plan on Interstellar Ark · · Score: 1

    What would it matter if we screwed up some sterile rock somewhere else in space?

    Now, if we screwed up a planet that had indigenous life, then it'd be bad, but if we terraform a sterile planet and colonize it, and screw it up, I see no reason to feel sorry about the planet.