Dan made sure he didn’t carry anything in his head: All ideas were put on paper as a note or a sketch. When he had to turn a page, he ripped it out to lay it next to the other pages. I realized how critical it was to have plenty of room to see everything at once. I saw the same technique of storytelling and drawing of ideas.
How to Make a Concept Model « Boxes and Arrows my ongoing frustration with my screen-based processes.