1. Tell the truth
  2. Act on the truth

Precautionary prin­ci­ple: People want to wait for cer­tainty be­fore act­ing on the prob­lem (of course once you’re ab­solutely cer­tain, the thing has al­ready hap­pened)

A Scientist's opinion   A paper     A review of papers      The IPCC
------------------------- More Conservative ----------------------->

Whenever we check pre­sent ob­ser­va­tions against past pre­dic­tions, the pes­simists seem to be the clos­est.

Climate change is worse than cause and ef­fect: It has all of these feed­back loops that make it worse ex­po­nen­tially.

Shifting the Overton win­dow is use­ful (Hence Extinction rather than Climate Change).