Mechanism of MindThe Mechanism of Mind presents Edward de Bono's original theories on how the brain functions, processes information and organises 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