We don’t get wise just by adding and adding. We also need to subtract.
A Competent has too much of a handle on the big picture to confuse himself with an Expert: he knows what he doesn’t know.
When you’re starting something new, the most important thing is knowing what to learn.
In fact, if we don’t actively hone our craft and skills, we get worse.
You gain the most understanding by doing, managing someone who is doing, and talking to other people.