According to Irving L. Janis, groupthink is the best way for a group to reach a decision.

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Irving L. Janis defined groupthink as a psychological phenomenon that occurs within a group of people in which the desire for harmony or conformity in the group results in an irrational or dysfunctional decision-making outcome. He did not consider it the best way for a group to reach a decision, but rather a potential pitfall to be avoided.