There is no guarantee of happiness, wisdom, or long life if you drink of me this evening, she says, very softly. There is no nirvana. There is no sal… - Dan Simmons

“Humanity has evolved—as far as it has evolved,” continued the old priest, “with no thanks to its predecessors or itself. Evolution brings human beings. Human beings, through a long and painful process, bring humanity.”
“Empathy,” Aenea said softly.

Thus evolved some members of the Core—not altruists, but desperate survivalists who realized that the only way ultimately to win their never-ending zero-sum game was to stop the game. And to stop the game they needed to evolve into a species capable of empathy.

What was the Depression?
Bad economic times in their pure capitalist nation-state, Aenea said. Remember, the economy wasn't really global then, and it depended upon private money institutions called banks, gold reserves, and the value of physical money—actual coins and pieces of paper that were supposed to be worth something. It was all a consensual hallucination, of course, and in the 1930s, the hallucination turned nightmare.