I think this needs to be caveated. There are "dumb" questions and then there are actually dumb questions.
A "dumb" question that challenges some implicit assumption that nobody actually has addressed but maybe some people were also wondering is good. Telling people to ask "dumb" questions IME empowers people who can't differentiate between that and something easily googleable or that belies a fundamental lack of knowledge to ask time-wasting actually-dumb questions. You don't want that.
A "dumb" question that challenges some implicit assumption that nobody actually has addressed but maybe some people were also wondering is good. Telling people to ask "dumb" questions IME empowers people who can't differentiate between that and something easily googleable or that belies a fundamental lack of knowledge to ask time-wasting actually-dumb questions. You don't want that.