The whole problem with doing nothing about climate change summed up succinctly:

It is the degree of opacity and uncertainty in a system, as well as asymmetry in effect, rather than specific model predictions, that should drive the precautionary measures. Push a complex system too far and it will not come back. pic.twitter.com/KTPDM6uaBR

— NECSI (@NECSI) December 14, 2018

All of the climate models are wrong, some likely spectacularly so. However, they are useful to us. What I mean is that we’ve loaded a revolver with a bullet, closed our eyes, spun the cylinder and pointed it at our faces, then started pulling the trigger. We don’t have an accurate model for where the round is but we know it’s there. Nor do we know exactly what it’ll do but it will be very bad indeed.

This is climate change and its models. None predict an anodyne, salubrious future. Even the most positive predicts trillions of dollars of losses and huge dislocations. Do people not understand risk and insurance? No, it seems they do not.