The issue isn't that they know too much. The more likely difference is that you are an expert at relevant kinds of problem solving and they are not (they might

The issue isn't that they know too much. The more likely difference is that you are an expert at relevant kinds of problem solving and they are not (they might be pretty good, but that's not the same thing). Expertise is not about knowing lots of facts or APIs or whatever. Chances are you don't even realize you have the relevant skill (there's a thing called "expert blind spot") so you also have hard time articulating what exactly you're doing. There is in fact quite a lot of research on the subject. Might want to start with "Sources of Power" by Gary Klein, and "The Cambridge Handbook of Expertise and Expert Performance" (which I haven't read yet but gets cited a lot).