I've discovered that this can be a deflection tactic for some. Usually it happens in a situation where I try my best to explain a part of an app or system. The other person is overwhelmed or confused but doesn't just say that, and instead kicks the can down the road by saying there is a lack of documentation to reference or are in need of diagrams. When I then take the time to add info to a wiki or spend time diagramming concepts with those developers, it seems to not help aid understanding at all. Then I realize I just wasted a lot of time.