A possible explanation for the Fermi Paradox (if aliens are out there, where are they?) is that there's something that kills off civilizations at X point, something that "filters" out advanced civs. One of the possibilities is that any civ making technological progress is going to eventually discover nuclear power, and if they have any concept of attack/defense, they're going to weaponize it, and when you weaponize nukes, you open a Pandora's Box, and most civs destroy themselves. That's one possible "Great Filter".
So what are some other possibilities? I posit that planets capable of supporting advanced life are very fragile, and when civs become advanced enough, they invariably disrupt the delicate balances of ecosystems and feedback loops, and quickly render their planet inhospitable for life.
So what are some other possibilities? I posit that planets capable of supporting advanced life are very fragile, and when civs become advanced enough, they invariably disrupt the delicate balances of ecosystems and feedback loops, and quickly render their planet inhospitable for life.
via International Skeptics Forum http://ift.tt/2utTecW
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