A classic besteller that presents de Bono's model of the mind, which remains as insightful as it was when first published in 1969 The Mechanism of Mind presents Edward de Bono’s original theories on how the brain functions, processes information, and organizes it. It explains why the brain, the "mechanism," can only work in certain ways and introduces the four basic types of thinking that have gone on to inform his life’s work, namely "natural thinking," "logical thinking," "mathematical thinking," and "lateral thinking." De Bono also outlines his argument for introducing the word "PO" as an alternative to the word "NO" when putting lateral thinking into practice. Drawing on colorful visual imagery to help explain de Bono's theories and thought-processes, from light bulbs and sugar cubes to photography and water erosion, this book is a must-read for anyone who wants to gain a greater understanding of how the mind works and organizes information—and how Edward de Bono came to develop his creative thinking tools.