The weakness of tie strength

The relationship between network structure and access to novel information has fascinated social scientists for decades, culminating in the recent identification of the bandwidth-diversity tradeoff. Yet, existing work focuses on a unidimensional conception of network ties that leaves many important sources of novel information unexplored. We unpack bandwidth, identifying three factors that govern the transmission behavior of network ties: capacity (the ability of a tie to transmit content), frequency (the average time between tie activations), and redundancy (the extent to which a tie reaches persons who are connected to each other). Empirical analyses and simulation models reveal new types of ties, as well as the conventional variety, that open promising research avenues.