> humans aren't wired to think about the wellbeing of large groups, even less about the entirety of the world.

It’s even trickier than that. Humans have a hard time putting their “future self” above their immediate gratification. You almost couldn’t engineer a worse crisis for humans than Climate Change because the effects are largely in the future — though we’re really starting to experience them now — and it requires sacrificing things in the short term. People can barely be convinced to save a bit of their income for retirement (or are so stretched they can’t afford to).