"it forces you to have a mental model of the underlying implementation to know how to use its tools." This is a BIG reason why I recommend even to advanced Git

"it forces you to have a mental model of the underlying implementation to know how to use its tools." This is a BIG reason why I recommend even to advanced Gitsters to use a GUI tool like Tower or SourceTree so they don't get confused or inconsistent about how their repo is structured. I've used Git for years and I can't keep it all in my head. Surely some can but not me and probably not most.