I am a testament of "stupid questions". I work with specialists in hydraulics, electronics, networking, programming, nuclear materials, metal and polymer materials and electrical distribution. The guys always make fun of me in a nice way since I am not an engineer and I always ask a lot of questions. Despite the fact that I am just a "dumb" training manager, they come to me all the time because they know that if I don't understand, I will ask.
In 3 1/2 years of working with these guys, I have learned a lot about our systems just by asking the "stupid questions" as they were.
Paul.