Lex Fridman Podcast
#455 – Adam Frank: Alien Civilizations and the Search for Extraterrestrial Life
Adam Frank
The other thing is the idea of pulling up the ladder that somebody, you know, some species makes the innovation, but then it fills the niche and nobody else can do it again. So yeah, it only happened once, but it happened once because basically the creature was so successful, it took over and there was no space for anybody else to evolve it.
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