Sebastian Junger

And when they're shrieking in terror, their buddies in the rival troop don't rush to their aid like humans would.

They run away.

That's the difference between chimpanzees and humans.

is what's called the male coalition exists in chimpanzee society, but they don't run to the aid of their brothers when the chips are down.

They save themselves individually.

Humans don't do that.

We will rush to help a brother who's in danger, as it were.

Even at risk to our own lives, it's one of the few unique traits that humans have that other mammals don't.

Yeah, exactly.

No, because we're better off in a group, even a group in a desperate situation.

But chimpanzees, the rival troop that's getting beaten to death one by one, eventually they're wiped out because they don't form a coalition to defend, only to attack.

They'll form a coalition to attack, but not to defend, right?

So what happens is the more aggressive troop of chimpanzees...

Wipes out the males of the rival troop one by one because the rivals won't form a coalition to defend.

And then they take over the territory, all the food resources of that territory, and the females.

And now the aggressive troop of chimpanzees is now bigger and stronger.

And those genes will be passed on at a higher rate than the genes of the poor bastards who got beaten to death one by one.

Right.

That's how Darwinism works, and that's why aggression exists in the world.

There's a genetic reward for it.