As you say, you can't just tweak the capslock assignment in vimrc or by issuing a command. The great thing about the jj/jk hack is that if you end up on some ra

As you say, you can't just tweak the capslock assignment in vimrc or by issuing a command. The great thing about the jj/jk hack is that if you end up on some random system or borrowing someone else's shell for a second then all you have to do is type ":inoremap jj <Esc>" and you're back in the groove. I was a little skeptical about it at first as it seemed like a weird hack, but it's actually quite practical. The fact that you don't have to leave the home row to swap between modes is a huge efficiency boost.