That is the point I was driving at. They're the same as us with different environmental factors. Hence the dog trick metaphor - you wouldn't expect a dog to learn the "play dead" trick before the invention of guns.
My only real point here was that if we're going to stake the claim that "innovation is human nature", we have to consider a broader scope of the word to include forms of innovation that are mostly invisible to archaeologists - the problem then being that we are making completely unsupported claims to do so.