You're far more optimistic than I about 1) how quickly agriculture can adapt to large shifts in rain and wind patterns -- for instance, what if "more rain" inc

You're far more optimistic than I about 1) how quickly agriculture can adapt to large shifts in rain and wind patterns -- for instance, what if "more rain" includes torrential downpours with massive flooding, at unpredictable intervals? 2) how quickly the world economy can adapt to most of its major cities becoming uninhabitable (even where temps stay reasonable, sea levels won't) 3) how adaptable political systems will be to unprecedented climate-driven mass migrations, both within and between states, and in the face of collapsing states? I don't think it'll be a gradual change at all -- more a series of rolling crises, where places spared a particular crisis either are at risk of being hit directly by the next one, or have to deal with the social, political, and economic upheaval as people die or flee areas directly impacted.