I'll have to dive in this one more. First pass thoughts:

I love the implication that he thinks slower than 80 wpm. Sounds absurdly unlikely.

I also love the idea of throwing it away. Never fully been brave enough to do that, though. Nor have I ever seen it done. Getting closer as I get older. By coming up with a language for what I'm doing, I'm free to throw out how I've done it, so long as I honor the language I left behind. (Curious if this is the gem of dsl stuff. Just another way of saying to focus on the api.)

The shorthand, of course, complicates this. Does he do the first pass in shorthand? Even a mix of long and shorthand? That increases the writing speed considerably.