Earlier quoted context omitted.
When someone asks me a question that is or should be documented, I like to ask where they looked for it (link or search query). * Sometimes, this prompt is enough for them to find the answer. * Sometimes, they tell me a spot that makes sense to them, and I make it have the answer. (Maybe just by adding a cross-reference.) * If they refuse to look at the docs, I can't help them.
The answer has always been “I asked Bob and Bob half remembered you worked in it once”, without any attempt to look for info, in my experience :(
People rag on StackOverflow for being mean, but it was a good training ground for developing habits that satisfy the social contract of professional spaces.