I agree, it’s likely many subtle, accumulated factors. I think the interesting question, that we may never be able to answer, is whether crow intelligence is s

I agree, it’s likely many subtle, accumulated factors. I think the interesting question, that we may never be able to answer, is whether crow intelligence is such that they could have developed on our trajectory as well, had things been different. Or is our intelligence, while similar to crows and other animals in many ways, fundamentally different in some way? Or was early hominid intelligence middle of the pack and it was just the other factors you mentioned that gave it the edge it needed?