Quote:
Originally Posted by freebeard
Your 'case in point'? The weasel-word gotcha is '...and continue to function'.
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No, because I'm comfortable just leaving it as advanced prior civilizations.
It suffers the same problem as theism; that you can't prove a negative. It's usually not useful to consider things for which there's no evidence of, because there's an infinite number of those things. Is it worthwhile for me to consider unicorns? If yes, then how about unicorns ridden by leprechauns? If yes, then what about unicorns ridden by leprechauns in another dimension?... there's endless combinations of ways to imagine things for which there's no evidence.
Stacking big rocks isn't evidence of advanced burrowing machines undetected by humanity; it's evidence of a primitive culture expending enormous amounts of precious resources to stack big rocks.