Past 100 years also tell us that there will be world wars, empires will go bust and some nations/people will be uprooted and have to migrate. That's a lot of un

Past 100 years also tell us that there will be world wars, empires will go bust and some nations/people will be uprooted and have to migrate. That's a lot of uncertainty to bear, of course, and history does not predict what happens in the future. It just tells us something will hit us and we probably won't see it coming (paraphrasing Dan Carlin).