A practical book explaining thinking methods useful for problem-solving. - Title: Train Your Intellectual Agility - Author: Isao Hosoya - Price: 1600 yen - Content: "Fermi estimation" for problem-solving - Table of Contents: 1. What is "Thinking Method"? 2. How to Approach "Frames" 3. "Applying Business to Triangles" 4. Organizing "Tasks" 5. Identifying "Essential Problems" 6. Training "Thinking Patterns" 7. Bringing Out "New Ideas" 8. "Balance of Thinking" 9. To Further Train Thinking Skills The cover has some minor damage. Thank you for looking.