Al Gore Wins Nobel Peace Prize

[tame_deuces]

Well, if we assume that disasters don't 'matter' to our descendants, then we might as well do our best to avert disaster X and create what we assume is a better world for ourselves, if that leads to disaster Y instead, then obviously that won't matter to the descendants either.

So even if you follow the given logic, you will end up at the conclusion that you should indeed follow what you see as the best course of action.