u/Advanced-Two584

People seem to like explaining the most basic principles of things that I studied or things that I'm super passionate to me, and I really don't know how to react when I know more about it than they do. Right now, I just nod along and pretend that I didn't know so that I don't offend them, but it feels really fake and makes me seem a lot more ignorant/dumb than I am.

How do I kindly let them know that I know already, and probably know more about it than they do. I'm sick of having my job explained to me by someone who isn't even in the industry, or having people try to teach me about my passions and hobbies.