Discussion 66 (also known as Buzz Session or Philipps 66) is a variation of brainstorming that can involve a very large number of participants. Typically, one uses participant sets of greater than 50 people.
The number 66 results here on the one hand from the group size (six people) of the small groups and on the other hand from the time period for the brainstorming intervals (six minutes). However, experience shows that the advantage of activating many minds in a very short time only occurs when the skills of a very eloquent moderator who can inspire and carry the group along with the target are also used.
Discussion 66 is particularly suitable when a large number of ideas need to be brought to the table quickly, for example to find new niches for products or for services, to drive product improvements and to think about new products and process technologies.
But areas such as technical design, advertising, sales promotion, naming, leadership problems, and organizational problems are also appropriate here.