Haha, I didn't even see that pun. Good eye :) Let me clarify though: while I don't think humans are much different from the other mammals, I think it's a big s

Haha, I didn't even see that pun. Good eye :) Let me clarify though: while I don't think humans are much different from the other mammals, I think it's a big stretch to lump us in with fish and reptiles. The key is the neocortex, which is unique to mammals. (Birds are another story that I don't know much about. I'm tempted to think that through parallel evolution at least some species have developed a similar faculty without a neocortex.) More important than variations between people are variations within one person over time. I remember cases when, as a child, I didn't understand what was going on around me. Maybe I did at the time, but I realize now that I didn't. I was still conscious and aware of course, but had a much simpler model of the world that I was working with. I imagine that's what it would be like if you could see what's going on in another mammal's brain -- very similar processes going on, with a simpler model of their environment.