Problem solving 101 by Ken Watanabe reads as practical, instructive. These 12 books share its genome — matched by how they actually read, not just their shelf label.
A breezy, diagram-driven walkthrough of logic trees and decision matrixes via friendly scenarios — approachable enough for a middle-schooler, useful enough for a manager. Reads more like a workbook than a treatise. Best for: beginners who want a visual, jargon-free intro to structured problem-solving.
It's a complete, standalone-satisfying story.
It's an all-ages read — as loved by adults as by younger readers.
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