did he just say locomotion came from squirrels
I once said that to Rod Brooks, when he was giving a talk at Stanford, back when he had insect-level robots and was working on Cog, a talking head. I asked why the next step was to reach for human-level AI, not mouse-level AI. Insect to human seemed too big a jump. He said "Because I don't want to go down in history as the creator of the world's greatest robot mouse".
He did go down in history as the creator of the robot vacuum cleaner, the Roomba.