So, Tom, are you just trying to be controversial and poking the lion? I believe you are confusing a teacher, facts with a mentor. A mentor offers more than knowledge. They give emotional support, advice on the pros and cons, introduce the mentee to others. Here's my article about one person's growth from mentoring https://medium.com/swlh/mentoring-and-an-artists-life-e4dc8327353e?sk=b736afe16461434506e46278728ce052