Sure, but there are 4 billion years of selective pressure behind us that make us a lot more alike than different. Maybe this runs at a higher level in the 'brai

Sure, but there are 4 billion years of selective pressure behind us that make us a lot more alike than different. Maybe this runs at a higher level in the 'brain software stack' that has more variation, but it seems like it'd be a more common lower level type of thing. Ultimately this is just a hunch though about what I suspect is more likely, I can obviously be wrong.