Exploratory sketching has more to do with thinking than it does with art or graphic design. It is visual thinking, to use art psychologist Rudolf Arnheim’s term. You are free to draw things that don’t mean anything to anyone but you. You are free to explore dead-ends and abandon them without any obligation to tie them up. You are simply exploring the nature of the problem as you currently understand it. You are sketching in order to extend your own thinking on the matter. You are not drawing to commu- nicate a well-formed idea. You don’t yet have a well-formed idea. You are drawing in order to tease out ideas.