"Seems like flawless thinking until <a href=""https://www.youtube.com/watch?v=Gfr50f6ZBvo&amp;t=1h36m20s"">1:36:20</a><br><br>But intelligence has evolved twice on Earth. The other line being the octopus. It seems plausible that lineage could develop technology in a few million  years if we crash.<br><br>The common ancestor lived prior to the deuterostome/protostome divergence (octopus is protostome). This had to be pretty early in multicellular evolution. Therefore convergent evolution", getting from multicellular life to intelligence is not a unique occurrence.