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Matt Ridley: When ideas have sex


Matt Ridley: When ideas have sex

Matt Ridley: When ideas have sex
Duration: 16:26


At TEDGlobal 2010, author Matt Ridley shows how, throughout history, the engine of human progress has been the meeting and mating of ideas to make new ideas. It's not important how clever individuals are, he says; what really matters is how smart the collective brain is.