CIRCA:Brainstorming

From CIRCA

Brainstorming is a tactic for generating lots of ideas in a team. The key is that while brainstorming no one can critique the ideas of others and there should be no negative feedback. Essentially everyone agrees to only generate new ideas or add to ideas, but not to criticize ideas or try to prioritize them.

There is a nice long discussion of brainstorming in a New Yorker article Groupthink by Jonah Lehrer.