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#292 – Robin Hanson: Alien Civilizations, UFOs, and the Future of Humanity
Lex Fridman Podcast
Six Hard Steps
We don't really know which steps were the hardest or not, because we just have a sample of one. Life appeared roughly 400 million years after the very first time when life was possible at the very beginning. So those two numbers right there give you the rough estimate of six hard steps. But if you're lucky enough that they all appear at a very short time, then the durations between them will be roughly equal.
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