But the assumption here is there are many many things to learn. What you are saying is mastery of a skill builds off itself, of course that's true. But learnin

But the assumption here is there are many many things to learn. What you are saying is mastery of a skill builds off itself, of course that's true. But learning something completely new is still going to have a MUCH higher return. And this is more true the MORE uncorrelated the things you are trying to learn.