[mauvehaus]

I think framing this question as either "in the union" or "a rat" is pretty counterproductive. There are good reasons a person might want to learn something without pursuing it as a career.

I'd feel pretty impoverished if I was only allowed to know the skills required to do my job because learning the skills required to do someone else's job was forbidden by some cloak of secrecy by those who knew the skills.

[throwaway742]

Sure it makes sense why you would want to learn, but why would they want to train you?