That complexity is meaningful as it precludes precise modelling. Now that does not mean we should not curb CO2 emissions, rather it is the degree of opacity and

That complexity is meaningful as it precludes precise modelling. Now that does not mean we should not curb CO2 emissions, rather 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. The popular belief that uncertainty undermines the case for taking seriously the "climate crisis" that scientists tell us we face is the opposite of the truth. Properly understood, as driving the case for precaution, uncertainty radically underscores that case, and may even constitute it.