I used to draw, a lot. Not too much anymore. After reading this book, I don't think I'll ever let the drawing habit slip again.
This book drives home the point that we're visual creatures and pretty much everything can be understood and explained better with pictures. This isn't a "how to draw gestalt art" book. Anyone can draw the basic shapes to get their point across and understand things better. The book is about using a few simple concepts to get ideas across for innovation, sales, and teaching. Concise but wonderful.