Open Question: Wouldn't it be more practical to search for signs of extinct technological extraterrestrial civilizations?

3 September 2010, 4:28 pm

A civilization can live, or it can die. Living civilizations learn how to protect themselves, a large portion of which means learning how to conceal your presence from potential predators. Extinct civilizations, on the other hand, may not have learned that lesson. It seems just from thinking about it for awhile that there are probably more extinct civilizations out there than there would be currently living, active ones. Many things that bring about the demise of a civilization would be things that we should be able to detect - nuclear wastelands, crumbled asteroid belts littered with technological debris, ruins with some still-active technology that hasn't yet shut down on its own (nobody's around to turn it off) - I think if we applied a bit of logic and reason to the notion, the ideas for detecting signs of intelligent life via extinct extraterrestrial civilizations would be much easier and more likely to succeed. What do you think?... Read More »

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