Stathis Papaioannou skrev:
On 3/13/07, Mohsen Ravanbakhsh <[EMAIL PROTECTED]> wrote:
Not necessarily. If you draw a diagonal on a square on a computer screen, it will be made up of a discrete number of pixels despite what Pythagoras' theorem calculates. Irrational in the real world may just be an illusion.
I was trying to mark a distance in real world which is irrational according to a rational unit(Width of pixels), and for such diagonal the distance is an irrational number, although it might be made up of rational numbers of another irrational unit (diagonal pixels)
I mean there's some irrational distance out there!
How can you be sure? Maybe space is discrete.
Yes, space (and time) is discrete.  Everything in the universe is finite, and the universe itself is finite.  Infinity is a logically impossible concept.

Torgny Tholerus

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