Comment by embedding-shape

Agree, the insides are fairly simple and cleanly designed, you could explain exactly how almost everything works in a 1 hour presentation, and most people will grok the main ideas fairly easily.

The tooling on top is inconsistent and kind of messy though, and harder to explain than the internals. I recall hearing somewhere that the tooling we see today as the user tooling was really supposed to just be the tooling for messing with git directly, with the expectation that something would sit above and make it actually user-friendly. I don't remember where I recall this from though, so could be just a post-justification from my own brain to explain the situation :)