This book explains a diagramming technique to dramatically increase work speed. Please refrain from purchasing if you are concerned about minor details, as it has been stored at home. - Title: Think in Diagrams. Simplify. - Author: Jun Sakurada - Price: 1400 yen - Publisher: Diamond Inc. - Contents: 7 Tools to Dramatically Increase Work Speed - Features: Enhances the ability to think using diagrams Thank you for viewing.