Yeah, it does, but you, nor anyone from Austria, actually knows what "human nature" is. It's kind of this catch-all term meaning "whatever I want it to mean to prove my point."
Case in point: that neat story that came out in the Guardian last week about the "real" "Lord of the Flies." We're all familiar with the William Goldman book, right? A bunch of kids get shipwrecked, and "human nature" comes out and they get pretty savage and hierarchical.
This actually happened to 6 kids from Tonga in the 1960's; they stole a boat, got wrecked on an island, and lived there for a year and a half. They actually did great and when they were rescued, their medical examiner was kind of surprised at how muscular and healthy they were. Now, they were lucky, because they wrecked on a previously-inhabited island that had bananas, birds, and fish around, and they were able to hollow out tree trunks to store water. But the other thing they did was, they didn't fight. They worked together, agreed not to resort to violence, and even splinted the leg of one kid who broke his leg doing something, and it healed perfectly.
So, "human nature" is...savage competition or cooperative, collective action? If the answer is even "it depends," then these models based on behavioral assumptions are meant to be taken with a GIGANTIC grain of salt.