Furthermore, explains Surowiecki, there was no correlation between the performance of the smartest person in the group and the performance of that group.
Many years ago Mr. Dunbar famously noticed that there is a tight correlation between the size of a primate's brain and the size of the social group its species generally forms.
But, after studying a high-tech corporate-services provider, a French grocery group, a German broking house and an American mail-order company, the authors found little correlation between loyalty and profitability.