> Seasons, at least, are entirely predictable. Plant growth is somewhat predictable.

Decreasingly so, thanks to climate change. The increase in temp isn't the problem. It's that climate change increases the frequency of outlier temperatures on a seasonable basis. Crops don't just fail if the average is too hot. They fail if there are too many hot/cold days in a growing season. And that is the unpredictable thing we're going to be running into in the future. Certainly while we're all alive. It's already happening.

Latin American climate refugees have been fleeing north precisely because of climate change decreasing crop yields.