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"Stan Brown" <[EMAIL PROTECTED]> skrev i en meddelelse news:[EMAIL PROTECTED]
In article <[EMAIL PROTECTED]> in rec.arts.books.tolkien, Douglas Eckhart <[EMAIL PROTECTED]> wrote:
Amazing guys the Greeks; they even came up with atomic theory (Atomism- where we got the word 'atom') first proposed by Democritus in 5th/6th century BCE, only to be proved as (substantially) correct in the late 19th/early 20th!
Democritus was nearer right than his contemporaries, but I don't think it's fair to say that modern science proved him correct.
He was essentially guessing, just as his contemporaries were. The big problem with Greek science is that nearly all of it was guesses, with very little experiment to confirm or refute those guesses.
IIRC, Democrit used a faulty theory of mathematics to prove that there had to be some undivisible constituents to matter. It's much the same mathematical fallacy that leads to Zenon's "paradox", in which the thought-experiment is made with Achilles racing a turtle, giving it a head start. The theory "proves" that Achilles will never pass that turtle; he will get ever closer to it but never quite reach it. Which is a paradox, since anybody knows from experience that Achilles will rather swiftly pass the armoured little reptile. Let's say that Achilles runs ten times as fast as the turtle, and gives it a one mile head start. When the great hero has run a mile, the turtle has progressed a tenth of a mile. So Achilles runs that extra tenth of a mile but by then the turtle has plodded on for another hundredth of a mile. And so on. Since "obviously" a sum of infinitely many numbers cannot be finite, the turtle will always stay ahead of Achilles. Of course *we* enlightened people will realize that Achilles will reach the turtle after 1 1/9 of a mile, and then run on ahead of it, in accord with a billion experiments...
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