I don't make this comparison lightly but I'm reminded of Leonardo DaVinci. How much talent does one need to create something like this? It's not enough to be just 'good' at engineering, design, watchmaking, and writing... you have to be amazing at it ALL of it. AND have motivation to do it.

I'm just in awe.

You don't have to be watchmaker, just need to read and learn about it and understand it.

I read the GPS one a few months back, he absolutely amazingly explained the whole thing to a depth I never would've expected.

He’s elevated technical explanations to a delicious art form

same with https://www.youtube.com/c/3blue1brown