Groups are only smart when there is a balance between the information that everyone in the group shares and the information that each of the members of the group holds privately. It's the combination of all those pieces of independent information, some of them right, some of the wrong, that keeps the group wise.
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About James Surowiecki
James Surowiecki was American journalist (b. 1967). James Michael Surowiecki is an American journalist. He was a staff writer at The New Yorker, where he wrote a regular column on business and finance called "The Financial Page". Read more on Wikipedia →