Either we act or we don't act, and then either GW happens...
Acting to 'mitigate' climate change will cost a fortune.
Action needn't cost a fortune, using market forces and effective regulation carbon emissions can be reduced at minimal cost. Anyway the people that are causing it can easily afford it... Out of the four possible eventualities, acting now is the best. Either we act or we don't act, and then either GW happens or not. If we do not act, and global warming happens, the enitre world economy would completely collapse, and these third world communities would be wiped out in an instant.