Why College Teaching Hasn't Really Been Professionalized?

Teaching is irreducibly personal. It's deeply connected to our personalities in ways that other things we do aren't. If somebody comes into my classroom and says, i'm not doing right by my students, that's going to touch me at my core. I think it speaks to a kind of vulnerability it attaches to teaching that we don't talk very much about. But i think we're all at some level aware of. Another just at the most basic, or even pan level, is it strikes me that teaching is extremely personal. So if somebody criticizes the book, as i expect they will, and they should, i will not take it personally. I really won't