The Cognitive Ceiling: Your brain has a hard limit on how many stable, meaningful relationships it can maintain. The number — derived first from a comparative analysis of primate neocortex size, then replicated across human hunter-gatherer societies, military units and online social networks — is approximately 150. Above that, the architecture of memory, social attention, … Read more
The Invisible Health Crisis: The U.S. Surgeon General issued an advisory in 2023 declaring loneliness a public-health emergency comparable to smoking and obesity. The classification was not rhetorical. The mortality risk associated with chronic loneliness, measured across dozens of cohort studies and over a million participants, is approximately 26 percent higher all-cause mortality — placing … Read more
The Paper That Built the Modern Network: The business model of LinkedIn — a company now worth more than $200 billion as part of Microsoft — rests on a sociological insight published in 1973 by an unknown postgraduate at Johns Hopkins. The paper was 21 pages long, dense with mathematical sociology, and quietly redefined what … Read more
The Position Premium: In any organisation of more than 30 people, the highest-earning role is rarely the most technically skilled and almost never the most senior in tenure. It is the role positioned to broker connections between otherwise-separated parts of the network. The same individual, in the same job title, can earn dramatically more or … Read more
The Edge Effect of Innovation: The breakthrough ideas that define a decade — the technologies that reorganise industries, the discoveries that shift scientific fields, the products that redefine consumer categories — almost never originate at the centre of an established cluster of experts. They emerge, with remarkable consistency, at the edges between clusters, in the … Read more