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So current models are wrong because..
"are untenable given the current state of scientific knowledge."
But their version is right because "assessments of current scientific knowledge"
See I call that baloney, obviously you've found some meaning in it so stick with it. To ME, Drake was always flawed because it presumes a planet can only have one civilization and one life form, where as the only thing factual used in calculating it is.. there's an Planet earth.. that has life. And as we know from this single planet, there can be multiple civilizations over time and even if species are wiped out.. something else pops up, and of course the hibernation thing. Here on earth a 1/4 of animals/plants hibernate in someway, until conditions are right for them.
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