Knowledge to make smart decisions.
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 Wrong Question About Yourself: The most influential career advice of the 20th century — “find what you’re passionate about” — has been quietly overtaken by a more precise and more useful question. The variable that predicts long-term job satisfaction, life satisfaction, and even physical health is not passion. It is the daily use of … Read more
The Hidden Inventory: Your body keeps a meticulous, multi-system ledger of every stressful experience you have not yet recovered from. The ledger has a name, a measurement protocol, and a clinical implication. It is called allostatic load — the cumulative biological cost of repeated stress activation across decades — and it predicts your future cardiovascular … Read more
The Brain Fertiliser You Can Manufacture: A single molecule in your bloodstream determines, more than nearly any other variable, whether your hippocampus continues to grow new neurons into your seventies — or quietly shrinks into the cognitive trajectory that produces dementia. The molecule is called brain-derived neurotrophic factor (BDNF), and the most reliable lever for … Read more
The Industrial Inertia Tax: The single most profitable feature of modern subscription businesses is not the product, the marketing, or the brand. It is the engineered difficulty of cancelling. Adding even a single extra click between a user wanting to cancel and being able to cancel produces measurable revenue increases that, scaled across millions of … Read more
The Wrong Threat Map: Your brain runs a continuous, automatic risk assessment of the world around you — and it does so almost entirely on the wrong data. The danger you fear is not the danger most likely to harm you, and the gap is not a personal flaw. It is a structural feature of … Read more
The Brain That Rewires Itself: Until the late 1990s, mainstream neuroscience held a doctrine almost universally accepted in textbooks: the adult brain does not change. The connections are fixed at maturity; what you have at 25 is what you keep. The doctrine was wrong — and the most decisive evidence came not from a laboratory … Read more
The Two-Hour Advantage: The most consequential decisions of any working day — the legal briefs, the financial models, the negotiation closes — are not produced uniformly across the eight hours someone spends at their desk. They are produced disproportionately in a single 90-minute window. The window arrives roughly 90 minutes after waking, and the professionals … Read more
The Pill That Underperforms a Pickle: A 10-week head-to-head trial conducted by one of the most rigorous gut-microbiome laboratories in the world produced one of the most uncomfortable findings of modern nutritional science. A diet rich in fermented foods — yogurt, kefir, sauerkraut, kimchi, kombucha — significantly outperformed a high-fibre dietary intervention on inflammatory markers … Read more
The Furnace Most Adults Have Switched Off: Hidden between your shoulder blades and around your collarbones is a metabolically active tissue that, when functioning normally, can burn substantial calories without movement, raise insulin sensitivity, and shift gene expression in directions associated with metabolic health. The tissue is called brown adipose tissue (BAT), and the modern … Read more