The Cascade Equation: Across the more than 75 million viral cascades measured in computational social science studies, the data tells a counter-intuitive story: roughly 99 percent of attempted “virality” dies within two steps of its origin. The one percent that survives is not characterised by content quality, novelty, or emotional intensity. It is characterised by … Read more
The Promotion Predictor: Across more than 2,500 corporate employees tracked over 5 years at major U.S. firms, the single strongest predictor of who got promoted to senior management was not job performance, technical skill, or stated ambition. It was a specific measurable property of the employee’s position in the company’s informal communication network — a … Read more
The Cognitive Diversity Premium: Across more than 1,000 controlled team-performance studies, the dominant predictor of team output on complex problem-solving tasks is not the average IQ of the members, the seniority of the leader, or the budget available — it is the cognitive diversity of the team. Teams in the top quartile of cognitive diversity … Read more
The Asset You Cannot See on a Balance Sheet: Adults in the top quartile of measurable social capital — the network and relationship resources available to them — earn approximately $340,000 more in lifetime compensation than otherwise-comparable adults in the bottom quartile, and report substantially better health, life satisfaction, and career resilience. The asset is … Read more
The Urban Scaling Premium: Every doubling of a city’s population produces, on average, a roughly 15 percent superlinear increase in patents, wages, GDP per capita, and the rate of novel invention. The pattern is one of the most robust empirical findings in urban economics, replicating across centuries, continents, and city sizes. The cognitive output of … Read more
The Underpriced Productivity Lever: Workers with at least one self-reported close friend at work demonstrate roughly 11 percent higher productivity, 31 percent lower turnover intention, and substantially lower rates of stress-related absences than otherwise comparable workers without a close work friendship. The effect is robust across industries, demographics, and management styles. Despite its measurability, office … Read more
The People You Never Met Are Quietly Reshaping Your Life: The friends of your friends — and the friends of your friends’ friends, three steps removed in your social network — are, on the data, statistically influencing your body weight, your investment decisions, your happiness, and even your probability of getting divorced. The phenomenon is … Read more
The Smoking Decision Made by People You Have Never Met: Whether a smoker successfully quits — or whether a non-smoker eventually starts — depends substantially not on personal willpower, not on family history, not on income or education, but on the smoking status of people in their social network two or three connections removed. The … Read more
The Math That Connects Strangers in Six Hops: The structural feature responsible for the spread of innovations, the viral propagation of ideas, the rapid scaling of consumer technologies, and the unusual reach of professional networks is not a recent discovery of the digital age. It is a property of social network mathematics first identified in … Read more
The Network Paradox: Your closest friends are statistically the worst source of your next job, your next investment opportunity, and your next billion-dollar idea. In the architecture of modern wealth, the people who change your life are almost always the ones whose surnames you cannot quite remember. For decades, conventional wisdom held that career success … Read more