Crowds, of course, are not always wise. They are more likely to be wise when two principles are followed. The first principle is that groups should be composed of people with knowledge relevant to a topic. The second principle is that the group needs to hold diverse perspectives and bring different knowledge to bear on a topic.
— Richard P. Larrick and Jack B. Soll; professors of management at Duke University. "You Know More than You Think", Scientific American (2 June 2009).
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