>"If that were how things worked, we'd never use any new technology"

Nice try. That's a straw man. This isn't new technology. Its simply replicating existing functionality.

>"Obviously it is easier to pay a one-time up-front cost than to slog away inefficiently forever"

Whats the average typo 1 character as in most of the demos for "Fuck"? So I can either type 2 carets and 4 letters for a total of 6 characters or I can type the 4 characters in the word "fuck", how is the former inefficient? Wow, what a slog. I can't imagine what I will do with all the time I will have left over after installing this"

Speaking of straw men, this program does more than simple typo substitution. The listed examples include prepending sudo and using git-suggested commands.

>"The listed examples include prepending sudo"

Which you can get by typing:

    sudo !!

and git completion is in contrib:

https://github.com/git/git/tree/master/contrib/completion

Not really a strawman is it?

Well, yes it is, because again, I was just giving examples. Look at the list under "how it works" in the readme, and there's plenty of items there that aren't simple substitution. It'd be a lot easier to just 'fuck' for most of those than have to mentally parse what you need to do to 'fix it'.