Here's the post text. I was able to copy/paste it from Facebook, through some combination of running Linux, running Firefox, having AdBlock and not being logged in to Facebook:

A lot of people like to use the prisoner's dilemma to justify being shitty to other humans they personally know. I think think is a dumb analogy, at least for First World, relatively affluent adult life, because the original PD doesn't let you say "Hey, wait a minute, my game partner is an asshole who keeps defecting, I'm out of here".

That's why creating avenues of escape for people who don't have that luxury is so important to me. Entrapment is one of the most insidious parts of abuse, because of course you're going to come up with a counter-asshole strategy if you have to keep playing with an asshole. But most of those strategies have a cost of emotional guardedness and alienation that can make it tough to get along with genuinely good and nice people.

A better lesson from the PD? The winning strategy is always, always, always dependent on the strategies of your other players. It's really hard to juggle many wildly different strategies at once. Keep it simple. Pick a strategy that synchronizes well with itself, go and find people running the same strategy, and make that your people.