Good movie, but I think they portrayed Iceman as too primitive (the way he walks/moves in a squat manner; his interaction with the female) if he's from 40,000 years ago. I could be wrong, but someone from 40,000 years ago would be almost indistinguishable from modern humans, although with minor differences (teeth, height, maybe body hair, maybe a little more robust build, maybe keener sense of smell) but just as smart and maybe even more "smart" in certain ways (maybe more adaptable or creative; a sort of super jack-of-all-trades type of person who had to know a variety of skills in order to survive).