I thought I was a great teacher until I actually started teaching students for the first time.
Pedagogy books and pedagogy classes in college it turned out were a "best-case scenario" kind of thing.
If a student has trouble with X, do Y.
To develop a student's ABC, do DEF.
And everything will fall perfectly in place.
My, how my world would come crashing down.
The books and classes forgot to include what to do if a student won't look at you in the face, how to handle six months of groundhogs-day-style lack of practice, or how to cheer up a child who's going through the yearly statewide standardized testing protocols.
That's where the magic of experimenting and trial-and-error provided the real education. And it's one that continues every teaching day.
I'm imagine it's similar in other fields.
All the more reason to stop reading about how something is supposed to work. Go out and do the thing so you can figure out how it actually works yourself!
Time is of the essence. Best of all, you don't need to ask permission from the teacher anymore.