alt Hacker NewsSeasons, at least, are entirely predictable. Plant growth is somewhat predictable. Travel times are mostly predictable (early trading). The timeline of children growing up is predictable if (big if) they survive. Livestock lifecycles were known. They knew how long various kinds of food took to spoil.
These are very important things and most of them take place on longer or much longer timescales than a few months. Early humans weren't monkeys, and after they had left the tropics, they couldn't survive without planning because getting food is difficult in winter.
> 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.