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I don't see why a "Great Filter" is needed to justify there being no other highly evolved lifeforms - all it needs is for there to need to be a reasonably large
by mangecoeur 12y ago
I don't see why a "Great Filter" is needed to justify there being no other highly evolved lifeforms - all it needs is for there to need to be a reasonably large number of key evolutionary steps and environmental conditions with a sufficiently low probability. Multiply those and you end up with some pretty tiny chances of observing life as we know it.
- keule 12y agoI had the same thought and agree with what you wrote. But when you think about this set of evolutionary steps you still end up with the same scenarios: you are rare, you are first, you are fucked. So in that regard, you can subsume all of these steps into a filter.