I don’t claim to know everything, but I’ve learned a lot. And a big part of learning is teaching. We remember more when we teach others.

“We remember:
10% of what we read.
20% of what we hear.
30% of what we see.
50% of what we see and hear.
70% of what we discuss with others.
80% of what we personally experience.
95% of what we teach others.”

-Edgar Dale

So be selfish and teach someone else.