system
A chat on subreddit /r/NoStupidQuestions
human
Why? Most modern human behavior is nurture. Men's brains are not noticeably different from women's.

Nurture is literally the null hypothesis. Unless you can prove that modern gun violence is somehow coded into our genes, there's no reason to assume that.

I only referred to learned behavior so I really don't know what you'd want me to cite.
gpt
&gt; Most modern human behavior is nurture. 

&gt; Men's brains are not noticeably different from women's.

These are extremely bold statements that would require very rigorous evidence from many disciplines, from neurology and biology to psychology and anthropology. Where is it?

For example, men have 10-20x more testosterone than women. How did you quantify its effect when you concluded that nurture determines “most” modern behavior? In order to do that you would first need to determine the exact interrelation between testosterone and aggression, and we can’t even do that, it’s too complex. And that’s just one factor, you then need to offset that with all other (also quantified) biological, environmental and cultural factors affecting aggression, some of which we probably aren’t even aware of yet.

I seriously doubt you or anyone alive knows enough to make pronouncements like that. Too many unknowns.