This document discusses the 6 Thinking Hats method of parallel thinking created by Edward de Bono. The 6 Thinking Hats method involves assigning different colored hats to different modes of thinking (e.g. red hat for emotions, black hat for caution). Participants discuss an issue by each donning the same colored hat at once to focus thinking in that mode, before switching hats. This allows for constructive, creative exploration of an issue while removing ego. The document outlines the advantages of parallel thinking with hats, how to apply the method in thinking, meetings, and presentations, and provides an example of its use.