[BlackVeil]

but when I hear these archeologists and anthropologists speculate like that, I often wonder what aliens would think if they came down on Earth 20,000 years from now and discover "ancient ritualistic" games of tic-tac-toe scratched on a wall.

It would probably be the basis for some sort of intergalactic "Da Vinci Code" novel. :)

[SunkenCiv]

http://www.freerepublic.com/focus/news/653287/posts?page=88#88