Six Thinking Hats is a book by Edward de Bono [^main] where he posits that there are six types of thinking, which he describes and delineates by "hat": - **Blue**: metacognition or how to think - **White**: gathering facts - **Red**: Emotions and gut instincts - **Black**: Criticism - **Yellow**: Positive feedback and answers to problems - **Green**: Blue sky thinking and creative ideas ## Why hats? - They're easy to take on and off. - It's easy to differentiate between hats. - There's a connotation of a hat being part of a costume rather than an integral part of a person. ## [[The Six Performance Testing Hats]] [^main]: De Bono, E. (1999). _Six thinking hats_. Back Bay Books. [[Six Thinking Hats by Edward De Bono|My highlights]]