Sublime
An inspiration engine for ideas
Dan Roam is a true luminary in the world of visual thinking, which is probably why his book Back of the Napkin is an international bestseller (Dan Roam, 2008).
Lee LeFever • The Art of Explanation
The Back of the Napkin (Expanded Edition): Solving Problems and Selling Ideas with Pictures
amazon.com





Dan Roam's 6 × 6 Rule
Lee LeFever • The Art of Explanation
Whoever best describes the problem, is the one most likely to solve it.
– Dan Roam