If you're a bit frank and you're dealing with a person you don't particularly care for, you might use the expression "Do you want me to draw you a picture? How

If you're a bit frank and you're dealing with a person you don't particularly care for, you might use the expression "Do you want me to draw you a picture? How dense are you?" The thing is that it's extra effort for the author to draw pictures and think of image layout for what is ultimately the manipulation of symbols. If you're a proficient touch typist with a powerful editor, including macros, jump to definition, symbol search, multi cursor editing, you can spend a few minutes at a time without your hands ever moving far from the home row, let alone touching the mouse. We have very powerful tools for text manipulation and the highest bandwidth input device we have is a keyboard, so it's not at all surprising to me that text is still king for programming and probably will be until we have some kind of direct brain -> machine interface.