★Say goodbye to "decision paralysis"! Use mathematical tools to eliminate blind spots in decision-making, let data speak instead of intuition, and bid farewell to the agony of impulsive decisions~
★Authored by the authoritative Hiroyuki Nagano! A graduate of the University of Tokyo's Faculty of Science, plus cross-disciplinary thinking as a music conductor, he deeply understands the practical value of "mathematics as a logical tool"!
★From information organization, game theory, probability and statistics to calculus thinking, systematically train mathematical decision-making ability, making your choices stand up to scrutiny!
★A mathematical training manual designed for those "lacking confidence in decisions"; no boring formulas, easy to learn and apply immediately!

This book proposes using "mathematics" to improve decision quality—mathematics is a "logical thinking tool" honed over thousands of years. Decision-making relying on intuition is prone to being misled by biases, while mathematical thinking can sort out information accurately and compare options objectively.
The book explains in simple terms mathematical methods directly related to decision-making, from chart visualization, game theory to probability and statistics.

Hiroyuki Nagano

Hiroyuki Nagano is the principal of Nagano Mathematics School. Born in Tokyo in 1974, he graduated from Akashi High School and dropped out of the Department of Geophysics, Faculty of Science, the University of Tokyo. In high school, he participated as a Tokyo representative in the "Wings of Mathematics and Physics Seminar" hosted by Heisuke Hironaka. He studied at the University of Music and Performing Arts Vienna (Department of Conducting) and, after returning to Japan, conducted orchestras such as the Imperial Theatre and Tokyo Nikikai Symphony Orchestra. Currently, he serves as the principal of an adult mathematics school, and his vivid teaching has been widely reported by the media.

Part 1 (Information Organization / Thoroughly Understanding the Two Logics of Division / Mastering Mental Calculation Skills / Numerical Thinking Training)
Part 2 (Logical Construction / Multiplicative Thinking / Introduction to Game Theory)
Part 3 (Correct Understanding of Probability / Guide to Statistical Applications)
Part 4 (Concreteness and Abstraction / Cultivating Calculus Thinking)