It’s an intriguing counter factual. Perhaps earth took unusually long to produced highly intelligent life forms. Decent argument that it’s pretty quick once you start. And earth has started over several times. Or perhaps all intelligent life in th galaxy was seeded by ...
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Indeed. The "Great Filter" might very well be that, as a matter of physics and chemistry, "burning stuff" is easy, "creating fission and fusion" are mildly difficult, but "creating a safe habitat in space or on another world" is extremely difficult.
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Failure of aliens to come and take our nukes away might be evidence that they don't exist, or do but aren't entirely benevolent. Or they're Starfleet and follow the Prime Directive.
End of conversation
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The cost of creating species-destroying technology (plagues, orbital bombardment, nukes, etc.) falls faster than ethics rises.
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