The trouble with brainstorming is that it reduces people into
impersonal little thought bites, little sound bites. It doesn't allow
them to access their imagination the way they can with avatars, and
it doesn't allow personal emotional investment. Its emphasis on
nonjudgmental positivity prevents animus and its bitter, exciting battles.
Brainstorming, with its image of storm troopers from faceless
military platoons or free-associating advertising drones, encourages
hivemind rather than originality.
http://www.wired.com/news/columns/0,70494-1.html?tw=wn_story_page_next1
"People Who experience mood swings, fear, voices and visions"