Date Added: Jan 2010
Brainstorming requires considerable diversity in order to be effective. So don't be afraid to mix it up, including all types of different people who can come at a problem from various points of view. Keep in mind you are trying to find a solution that fits and this requires a broad mix of people to flush out all possibilities from both convergent thinkers (important for consensus building) and divergent thinkers (important for the generation of ideas). Therefore, brainstorming requires a group of people with very diverse backgrounds and knowledge.