It's really difficult to imagine in 2024 just how much H4 changed the world...and Harrison was a carpenter from the country who taught himself everything about clock and watch-making! Blows me away.
I took a chair making class with Peter Galbert and I can say he is probably the most outright brilliant person I've ever met. It shows in both his approach to solving problems and the clarity with which he explains his work.
For context: I know a number of PhD's, MD's, and notable programmers.