I'm not going to the gym because of the tragedy of the commons? I really don't think that's it.
Well, you value whatever you're doing instead of going to the gym more than you value saving the world is what I was getting at. People value their own expected utility more than they value societal expected utility, even if most individuals in society would be better off if everyone somehow valued societal expected utility. Seems reasonably likely to me anyways.
Perhaps I misunderstood you; now it seems like you were saying "why do we hyperbolic discount?" or something to that effect.
30 minute panel
The first question was why isn't everyone trying to change the world, with the underlying assumption that everyone should be. However, it isn't obviously the case that the world would be better if everyone were trying to change it. For one thing, trying to change the world mostly means trying to change other people. If everyone were trying to do it, this would be a huge drain on everyone's attention. In addition, some people are sufficiently mean and/or stupid that their efforts to change the world make things worse.
At the same time, some efforts to change the world are good, or at least plausible. Is there any way to improve the filter so that we get more ambition from benign people without just saying everyone should try to change the world, even if they're Osama bin Laden?
The discussion of why there's too much duplicated effort in science didn't bring up the problem of funding, which is probably another version of the problem of people not doing enough independent thinking.
There was some discussion of people getting too hooked on competition, which is a way of getting a lot of people pointed at the same goal.
Link thanks to Clarity