Benevolence isn’t inefficient and I’m a big fan of benevolence. It’s just that it’s not enough. It’s okay for a group of twenty‐five or fifty people where everyone knows everyone. But when you have 300 million in the US or 7 billion in the world, if we were self‐sufficient and we had to produce everything for ourselves we’d all die, or 99% of us would die. So we have to cooperate with each other. But the only way to cooperate with each other in such large numbers is through markets.