You're a counter example, but many professions are indeed hereditary. With some probability, anyway. Calling it a caste system is an exaggeration, obviously, bu

You're a counter example, but many professions are indeed hereditary. With some probability, anyway. Calling it a caste system is an exaggeration, obviously, but there's a nugget of truth. Go survey some dentists. You'll be surprised how many of their parents were dentists.