We are social creatures who must interact for mutual benefit, and — the negative version — who harbor grudges when we feel we’ve been treated unfairly. Without a sense of fairness and also a level of trust, without a system of reciprocal altruism and tit-for-tat — one good turn deserves another, and so does one bad turn — no one would ever lend anything, as there would be no expectation of being paid back. And people would lie, cheat and steal with abandon, as there would be no punishments for such behavior.
At the NY Times.
I like her optimistic view of what comes next, even though I don't share it. Her new book is Payback: Debt and the Shadow Side of Wealth.