Furthermore, explains Surowiecki, there was no correlation between the performance of the smartest person in the group and the performance of that group.
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.
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.