This document discusses different methods and frameworks for thinking. It introduces Edward de Bono who originated the concept of lateral thinking. It contrasts intelligence (IQ) with thinking, noting that IQ is potential while thinking determines performance. The main framework discussed is de Bono's 6 Thinking Hats, which represents different perspectives or modes of thinking - white for facts, red for emotions, black for caution/critique, yellow for positives, green for creativity, and blue for process oversight. The document advocates using these different thinking hats to achieve a full and balanced perspective rather than argumentative thinking.