I've got a 16-year-old adept doctor at the moment who dislikes herbs. Early this morning I had an event that caused several villagers to become ill and I discovered that my only doctor had died overnight. I grabbed the nearest kid at random and used her to heal them. This evening I came home and I see she's grown up and become an adept. She could have only been a trainee when she turned 14 so she must have found several people to heal while the game was off. If I drop her on any of the herbs she's off like a startled rabbit. It'll be interesting to see how long it is before she becomes a master.