Possibly the best way I have come across to run meetings.The principle behind the book is that you have six hats: White - Information, Red - Emotions. Black - Caution, Yellow - Optimism, Green - Creativity and BlueControl of thinking.Each participant at the meeting takes time to make suggestions at the meeting whilst metaphorically wearing the appropriate coloured hat. The advantage to this is that the doom and gloom merchants (Black hats) do have their time, but do not dominate the meeting, and are expected to contribute whilst 'wearing' the other hats, so they have to find positive things to say or be creative and so on.de Bono makes suggestions as to the best order to run meetings in, and makes practical suggestions for time and the wearer of the blue hat.