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12月20日 2009 Chevrolet Corvette ZR1: Revealed, Officially!
So how do you feel about American supercars? Other than the Saleen S7 I never thought much of what America had to offer. But have you seen the new Corvette from Chevrolet? It still looks American enough but it seems this one is here to compete with the big European players. Still no official word for horsepower or a time 0-60 but it is said that the horsepower is at least 620 and 0-60 in the low three seconds. That's quite impressive, at least in my book. More to be seen in the Detroit auto show this January. 12月5日 Christmas Personality TestsJust the thing to get you into the Christmas spirit, check out these tests about Christmas on Blogthings! So lets see! The Naughty or Nice test, only for girls, sorry guys! Turns out I have been pretty nice this year, or have lied to most questions
Were You a Naughty Girl or Nice Girl this Year?
Next up Which of Santa's Reindeer Are You? Well turns out I'm Rudoplh! I guess you could say my nose gets a bit red when I'm cold! Anyway I like Rudolph, he's special but nobody knows he is so they make fun of him. Just like me...
So how should you spend the holidays? Well I know I'm a Christmas freak, didn't need a test to tell me that... Anyway I guess I'll be doing a lot of shopping, baking, wrapping, decorating and all these things over the coming weeks! Already listening to Now That's What I Call Xmas btw!
Now for the good stuff What will you get this year? It seems I'll be getting money... Not very excited about that, I like unwrapping presents...
What Will Be In Your Christmas Stocking? There's more but I'll let you discover them on your own. Have fun 12月3日 Paradoxes Paradoxes are extremely interesting as they seem to challenge our fundamental ideas on how the world works. People have been looking at paradoxes for thousands of years and there is still discussion on some of the oldest paradoxes people have recorded. What makes them so interesting is that most of them are true in a mathematical/logical way but they don't make any sense intuitively. Here are some examples: Happiness or a ham sandwich? Which is better, eternal happiness or a ham sandwich? It would appear that eternal happiness is better, but this is really not so! After all, nothing is better than eternal happiness, and a ham sandwich is certainly better than nothing. Therefore a ham sandwich is better than eternal happiness. Smullyan (1), p. 219 Proof that there exists a unicorn
I wish to prove to you that there exists a unicorn. To do this it obviously suffices to prove the (possibly) stronger statement that there exists an existing unicorn. (By an existing unicorn I of course mean one that exists.) Surely if there exists an existing unicorn, then there must exist a unicorn. So all I have to do is prove that an existing unicorn exists. Well, there are exactly two possibilities: (1) An existing unicorn exists. (2) An existing unicorn does not exist. Possibility
(2) is clearly contradictory: How could an existing unicorn not exist?
Just as it is true that a blue unicorn is necessarily blue, an existing
unicorn must necessarily be existing. "Interesting" and "uninteresting" numbers The question arises: Are there any uninteresting numbers? We can prove that there are none by the following simple steps. If there are dull numbers, then we can divide all numbers into two sets - interesting and dull. In the set of dull numbers there will be only one number that is the smallest. Since it is the smallest uninteresting number it becomes, ipso facto , an interesting number. We must therefore remove it from the dull set and place it in the other. But now there will be another smallest uninteresting number. Repeating this process will make any dull number interesting. Gardner (1), p. 13 The ship of Theseus The ship wherein Theseus and the youth of Athens returned had thirty oars, and was preserved by the Athenians down even to the time of Demetrius Phalereus, for they took away the old planks as they decayed, putting in new and stronger timber in their place, insomuch that this ship became a standing example among the philosophers, for the logical question of things that grow; one side holding that the ship remained the same, and the other contending that it was not the same. Plutarch, Vita Thesei, 22-23 Proving that 2 = 1 Here is the version offered by Augustus De Morgan: Let x = 1. Then x² = x. So x² - 1 = x -1. Dividing both sides by x -1, we conclude that x + 1 = 1; that is, since x = 1, 2 = 1. Quine, p.5 Assume that a = b. (1) Multiplying both sides by a, a² = ab. (2) Subtracting b² from both sides, a² - b² = ab - b² . (3) Factorizing both sides, (a + b)(a - b) = b(a - b). (4) Dividing both sides by (a - b), a + b = b. (5) If now we take a = b = 1, we conclude that 2 = 1. Or we can subtract b from both sides and conclude that a, which can be taken as any number, must be equal to zero. Or we can substitute b for a and conclude that any number is double itself. Our result can thus be interpreted in a number of ways, all equally ridiculous. Northrop, p. 85 The paradox
arises from a disguised breach of the arithmetical prohibition on
division by zero, occurring at (5): since a = b, dividing
both sides by (a - b) is dividing by zero, which renders
the equation meaningless. As Northrop goes on to show, the same
trick can be used to prove, e.g., that any two unequal numbers are
equal, or that all positive whole numbers are equal. http://www.paradoxes.co.uk/ http://en.wikipedia.org/wiki/List_of_paradoxes |
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