Also, understanding the various ways in which people learn a specific subject is an underappreciated ability possessed by a good teacher. Knowing how various pe

Also, understanding the various ways in which people learn a specific subject is an underappreciated ability possessed by a good teacher. Knowing how various people get hung up on conceptually on different elements of a subject is something that comes from experience and outside review of your teaching that a "master" probably never gets. The corollary is that good teachers are rarely great in their field.