Given that climate is regulated by several different feedback loops that we only partially understand, the worst case scenario can be much much worse than a few

Given that climate is regulated by several different feedback loops that we only partially understand, the worst case scenario can be much much worse than a few cm sea level rise. Note that one particular failure mode for feedback control systems involves negative feedback turning into positive feedback as you make seemingly subtle changes to system parameters. The results are, needless to say, often catastrophic. Cosma Shalizi illustrates this problem nicely here: http://cscs.umich.edu/~crshalizi/weblog/543.html http://cscs.umich.edu/~crshalizi/weblog/543.html