This is the Achilles heel of Western science and it's total reliance on the scientific method. It's great for the chalk board, the lab, beakers, test tubes, lab coats and what can be proven in the moment.
It doesn't do so well with applied science, things that happen over long periods with many variables and covering great spaces or distances. Especially long cycles like climate or the behavior of celestial bodies like say black holes.
In facte the AGW crowd has bamboozled alot of people by trying to use the former to determine the latter, and make predictions over cherry picked evidence and concocted theory.
Fact is, the Earth is subject to long cycles of many thousands of years, for example just a few thousand years ago many things looked different, like warmer temps, higher seas, different precipitation patterns, most of which we don't understand and often completely refute the AGW fashionable theories of the moment.