Basically, these classes are talents. Not skills, talent. The way they expect it as hereditary is an indication that these are talents. I'm sorry if I'm staying too long but it bugs me when people say "you have a talent" when it's obviously a skill. If you do an activity at an early age and you do it naturally with little to no effort to fulfill it, it's talent. If you're shit at it then you got better, it's skill.