More people means that areas of expertise can be exploited. Also, you can make more monumental decisions in groups, because you know you won't be singled out for blame. Can hide, basically, from personal responsibilility. Not all groups make good decisions. However, groups, however, don't always make good decisions.
Juries sometimes render verdicts that run counter to the evidence presented.
Community groups take radical stances on issues before thinking through all the ramifications. This theory suggests that when people answer the Choice Dilemmas Questionnaire arguments favoring risk rather than caution are more plentiful. Similarly, anti-American students can muster many more arguments that confirm their negative image of the U.S and bigots offer more reasons to reject others rather than accept them. Social comparison theory. According to this approach, during group discussion people actively compare themselves with others.