The concept of preferential attachment is behind the hubs and power laws seen in many networks. New results fuel an old debate about its origin, and beg the question of whether it is based on randomness or optimization. See Letter p.537
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Notes
*This article and the paper under discussion1 were published online on 12 September 2012.
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Barabási, AL. Luck or reason. Nature 489, 507–508 (2012). https://doi.org/10.1038/nature11486
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DOI: https://doi.org/10.1038/nature11486