Math is the most reliable field of study to exist... ever. The science of 300 years ago used today might get some weird looks from scientists. But no one has a problem with using math that was made 300 years ago.
I had a professor that once said baseball was the key to American foreign policy. Countries that had troops occupying them that had a viable baseball league that outlasted the occupation had a much more prosperous future than ones where they forgot to spread baseball.