BBC - Future - Science

David-Barrett and Dunbar discover a particularly intriguing implication for our information age. One of the important factors in their model is the cost of communication: how hard it is to exchange information. It’s often suggested that by lowering the cost of communication, electronic networking will make it easier for everyone to access information and so will flatten the social hierarchy. The researchers find that, if there is an initial inequality in how information is distributed, lowering communication costs counter-intuitively sustains this steep hierarchy and promotes inequality. There’s less incentive to spread information around: you can just keep on looking until you find it.