Eh, perhaps sometimes? I think we are vastly more conscious of this sort of thing than we were, say, in the '20s and the '30s, and that consciousness is going

Eh, perhaps sometimes? I think we are vastly more conscious of this sort of thing than we were, say, in the '20s and the '30s, and that consciousness is going to help us screw up less. Which isn't to say we aren't screwing up some things now; I'm just saying that we're getting better at this sort of thing, in the two steps forward, one step back kind of way that humans as a whole seem to get better at things.