When reading, I usually skip over place descriptions. When writing on technical subjects, I often tell how to draw your own sketch, but I don't think 1% of readers bother. Even when I provide illustrations, it seems that people usually just take 10% of the information and run elsewhere with it, guided by their own preconceptions. I once watched a guy wreck his company project by getting a message backward. I'd even tried asking for a hundred bucks so he'd pay attention, and he said he couldn't afford it.