What Makes Teams Smart (or Dumb)
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HBR IdeaCast
And the idea is if you have a group of people– let’s say it’s 15 in a room– and 12 of them know the same 10 things, and three of them have information that only those three have, what will typically happen is that the knowledge that’s restricted to the three will remain hidden in the group’s deliberation, and the knowledge that is shared by the 12 will really come to the fore. And we know that often when businesses make big mistakes, when local governments make big mistakes, sometimes even when national governments make big mistakes, it’s because there’s a hidden profile that the leaders and managers in the group as a whole never got a hold of.