That's what I was trying to express, though: if "the wall clock runs slower", that's less useful than it sounds, because all you have to interact with is yourself.

I exaggerate somewhat. You could interact with databases and computers (if you can bear the lag and compile times). You could produce a lot of work, and test it in any internal way that you can think of. But you can't do outside world stuff. You can't make reality run faster to keep up with your speedy brain.

You can interact with yourself, and everyone else like you.

There is a lot of important work where humans thinking about things is the bottleneck.