What is a human? There is the animal body part of us, the thing that wants to survive, the fight or flight. But there is also another mental part of us that shows different emergent behaviors than an animal. For example if I dropped you off in the woods as a very young child, you would be an animal, you would share very few modern 'thinking' traits with human society. That is human society and what it does emerges from the complexity of our interactions. It doesn't take much research to realize our interactions and behaviors have grown far more complex in the last 10,000 years. And then in the last 500 years there's been further acceleration with the industrial age and the rise of technology.