I've learned , you don't know what you don't know until you know it.
Once I knew it, I realized I still knew nothing, until I practiced what I didn't know repeatedly.
Now I have to forget what I thought I knew , and remember what I didn't know, and repeat it when called upon, and I didn't know any of this either.
So I've learned nothing, but at least I know it. Pool and life are tough, in that order.
My wife says " Hon" you're overdosing on pool and fishing, you must eat something.
I say to her,,I know,,I know,,I know,,I know,,I know, after I read page 1,000,000 on aiming.
I tell her I know everything, and she agrees, just ask her.
The more I think about it , I may have learned never to say " I know "