Ask HN: Would you teach your skills to anyone?

I have realized that we learn a lot of things during our lives. I for example know more physics and chemistry than a scientist(just kidding, but I do know a lot). Some of us have gathered this knowledge accidentally, forced by the educational system or we were really passionate about it. Now all this knowledge stays there for some time and then unfortunately is replaced by other things(ex.lyrics of songs on the ads). Each one of us knows something better then the others around. And everyone wants to learn something. What do you think about this?