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by _kst_ 2100 days ago
The development of multicellular life is unlikely to be the great filter. According to Wikipedia, "Multicellularity has evolved independently at least 25 times in eukaryotes". https://en.wikipedia.org/wiki/Multicellular_organism#Occurre...

Evolution of eukaryotes from prokaryotes is a more plausible bottleneck. (Disclaimer: I am not an expert on any of this.)