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User: shobadobs

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  1. Re:Open mouth, insert paranoid foot on Bobby Fischer Found · · Score: 1

    There are a few ways to cheat at chess.

    For starters, one could consume a large amount of caffeine before the game.

    Also, suppose a player decided to rig a chess clock so that it ran slow or fast.

    Also possible is the use of handheld chess computers during a bathroom break. A few players have been caught using such things (not good players, I would imagine).

    Although, I don't see how Fischerandom would counteract any of that.

  2. Re:Earth's ICBMs at PEAK could kill 10% on Terraform Humans First, Then Mars? · · Score: 1

    Oh, all this doesn't matter anyway - the sun will burn out in a few billion years anyway. And even if by then we've escaped from the solar system, the human race will still eventually die off, when entropy finally wins.

  3. Re:Zaurus Support? on The Future of RPN Calculators · · Score: 1

    One major difference would be Qonos's keyboard design.

  4. oh my gosh on The Future of RPN Calculators · · Score: 2, Funny

    adjectives prepositions and rules RPN follow not should why?

    What is really scary is that I read that sentence without noticing anything wrong with it. I guess that's what happens to RPN users...

  5. Re:The future of RPN calculators... on The Future of RPN Calculators · · Score: 3, Insightful

    The real benefit to RPN is not the number of keystrokes or the speed at which it can be used (although it is superior for those reasons). The real advantage is that evaluating expressions with RPN makes it feel like you are evaluating the expression, whereas using "algebraic" mode is more like typing in the expression and getting an answer. RPN feels more natural, because you evaluate the expression as you would with mental math.

    Interestingly, I have noticed that after having adopted RPN and used it for two years, my mental math ability has dramatically increased. It is as if RPN use forged new connections in my brain. For instance, once, during a competition, I got a simple problem: f(x) = x^2 + 5, g(x) = x/2 - 3. Evaluate g(f(5)). It took one second to evaluate that and hit the buzzer. The reason i was able to do it so quickly is that internally, I thought of the functions as RPN routines - X SQUARED 5 PLUS 2 DIVIDE 3 MINUS.

    I didn't realize it until I just wrote this now, but my mental image of functions has dramatically changed because of RPN (I was just fine with them before, though).

  6. Re:??? - More Detail, please. on The Future of RPN Calculators · · Score: 5, Interesting

    I would suggest getting the HP-49G+. (I am a 49G user.) RPN might only be "minorly better," but the real question comes down to the operating system's user interfaces. The 49G's is simply far better. In RPN mode, the user can use all the calculator's features without having to jump through dialogue boxes all the time. For example, say I wanted to graph a sine curve. Instead of having to go to the "Y=" menu and such, with which we're all familiar, I merely need to type X [SIN] EQ [STO] [PLOT] [F4] [F5] [F6]. (and I can press F4 F5 F6 in very quick succession) It is really nice to use.

    After having used a TI-89, then an HP-49G, when I try going back to the TI-89 for some purpose (maybe a game, or a program i once made), I really start to notice how annoying and slow the 89's UI is.

    The HP is also much more customizable. The ability to remap the keyboard is quick, easy, and built in. There are 128 system flags for changing user settings, accessible via the MODES menu. The HP has no limit to the depth of the directory tree. Its menus are better -- they are at the bottom of the screen, somewhat like the TI-85 and Ti-86's menus, rather than having to type Shift MATH 4 4 every time you need to use a specific function.

    One of the neatest things is programming. Its programming language, Reverse Polish Lisp, is simple yet powerful. Plus, it has a built-in compiler for System Reverse Polish Lisp, and ASM.

    Plus, text-editing on the HP 49G/G+ is much, much easier. When in ALPHA mode, one can type both letters and numbers because the number pad has no letters on it.

    I used it for BC Calculus this year, and it easily served my needs.

  7. Some photos, information, on The Future of RPN Calculators · · Score: 1

    Very interesting!

    http://www.hpcalc.org/qonos.php

  8. Re:I didn't RTFA on There Are Infinitely Many Prime Twins · · Score: 3, Interesting

    No, you do not understand his proof. His proof makes the assumption that there is a finite number of primes. Then he disproves that assumption. Again:

    Say there were a finite set of primes. Call the elements of that set P1, P2, ..., Pn. If that set were finite, then the number (P1*P2*...*Pn)+1. would not have any prime factors. Therefore, that number would also be prime. Hence, there cannot be a finite set of primes.

    You are correct in saying that in the real world, multiplying the first N prime numbers together and adding 1 won't necessarily produce a prime.

    For example, 2*3*5*7*11*13 + 1 = 30031 = 59*509.

    However, the fact that such a number might have a rogue factor does not deny the proof of its validity, because the existence of a rogue prime factor would also discount the finite set of prime numbers. However, the above proof is valid without this.

  9. Re:Teaching Arithmetic on Recommendations for RPN Calculators? · · Score: 1

    Those are interesting topics.

    As a high school student and a fan of HP calculators, I have found that using RPN has made me capable of solving problems much more quickly. I currently am in BC calc with an HP 49G, and I do things in half the time it takes the teacher, who uses a TI-89.

    Programming with Reverse Polish LISP has helped my mental math skills dramatically, as well, because I am better able to remember the numbers in my head (whether that's a good thing about RPL, I can't say!).

  10. Re:I hate shoplifters more on Fry's Electronics - Selling Linux... Or Not? · · Score: 1

    You should read the above article about the exit checks -- they still cost an extra 10% or so, since the people doing the checking get a 10% comission on any unpaid items they can ID in people's carts.

    You are forgetting a few things.

    1. A 10% commission is less money lost than 100% of the price being unpaid.

    2. Having people at the door is also a deterrent, making people afraid of shopliftng at that store.

    The end result: Less stolen goods.

    And have some common sense, please. Goods do not "still cost an extra 10% or so" because of exit checks; that statement is illogical, considering that you're basing off of their 10% commission. A better reason would be because of the extra salaries the store has to pay. But presumably, this is less than the theft that occurs, or else the stores would not have these people.

    If prices are not lower, it's because the store is keeping the extra money.

  11. Re:Er, on An Enlightened Look at an Over-Lighted World · · Score: 1

    How about you read the article? Lowering the amount of street lighting did not impact crime in the cases where lighting was lessened.

    This article is not really so much about city lighting as it is about suburban lighting. There are no "natural habitats" any more in the cities, while suburbs still do. Suburbs also happen to lack things such as street muggings, etc, because people generally do not go out walking at night; they use cars. So crime rates have nothing to do with the issue.

  12. My experience on ScavHunt211 · · Score: 5, Funny

    I remember summer camp scavenger hunts -- we'd just have to look for trash on the last day of camp.

  13. Re:Hmm on Ender's Game Influences US Army Training · · Score: 1

    It's ironic, the parallels between Ender's Game and the current war. In both wars, they were fought preemptively, based on the expectation that the enemy _could_ become a threat. The buggers, in fact, were not planning any third invasion whatsoever.

  14. Re:They did the math? on RIAA Seeks Estimated $97.8 Billion From MTU Student · · Score: 1

    They do not. A trillion is a million times a million.

    1,000 = thousand
    1,000,000 = million
    1,000,000,000 = billion
    1,000,000,000,000 = trillion.

  15. Re:It is only a matter of time... on World's Largest Virus · · Score: 1

    Sounds like you took an idea right from Orson Scott Card's Speaker for the Dead, Xenocide, and Children of the Mind books, talking about the stories' Descolada virus.

  16. Re:Pur-lease. on Replacement for "Microsoft's" Virtual PC? · · Score: 1

    Why would they mind VPC users? Microsoft sells the operating system, not the computer.

  17. Re:bah! apple! on No More Mac Tweaking? · · Score: 1

    Obviously, the blue man group commercial involving the pipe structure shaped like a four would be much less cool if they used roman numerals. Like, duh :-P

  18. Re:Prohibitions on May I Have Your EULA Please? · · Score: 1

    Sealand is not inside British territory, it is an independent country. A British court even ruled that Britain has no jurisdiction over Sealand.

  19. Re:Counterproductive and silly??? on John Gilmore Sues Ashcroft et al. for Freedom to Travel · · Score: 1

    One unlucky attendant was blown out. All the others lived.

    Well then somebody died, didn't they.

  20. Re:No Censorship? Ha! on If You Had Something to Say to Future Generations...? · · Score: 1

    Actually, censorship wouldn't matter. How many people can understand the "English" that was spoken 1,000 years ago? Less than 0.001%, by far. Who can understand any language from 4,000 years ago? Who knows Sumerian? Who knows a language from 30,000 years ago? 50,000? The future generations won't.

    More useful would be images. Or some series of images made that could be made into motion pictures (anybody remember that story by A.C. Clarke? :)

  21. Re:about:mozilla on Easter Eggs in Web Sites? · · Score: 1

    IE 5.x and probably 4.x and 3.x do the same.

    What's interesting is when you mess with IE's hexidecimal comprehension. Try typing in about:

    That's not an egg; it's a bug.

  22. Re:I DID read the article... on Andreessen on the Browser Wars · · Score: 1

    No, this is why CSS sucks in Netscape.

  23. Re:I DID read the article... on Andreessen on the Browser Wars · · Score: 1

    The marquee element (as well as the blink element) are hardly what I call "innovations." Also, iframe _is_ part of the standard.

  24. QWERTY on Calculators vs. PDAs in the Classroom · · Score: 1

    On SATs, the only things that are banned are devices housing QWERTY keyboards, which most PDAs don't.

    But what about Dvorak keyboards?

  25. Re:IE often HAS to be your browser of choice on Opera 6.03 - The Wild Child of Browsers? · · Score: 1

    the problem lies in the fact that you cannot code by standards and expect it to look and act the same in every browser

    I'm sure that your visitors are going to open your web page in different browsers and compare the two views.

    Of course, I agree with rest of your comment, except for that one line.