Game theory is now part of almost every economist's tool-kit, as this week's Nobel economics prize recognises IT SOUNDS like a sports fan's dream. In Stockholm on October 11th, three men shared a $1m ...

In 1950, John Nash — the mathematician later featured in the book and film “A Beautiful Mind” — wrote a two-page paper that transformed the theory of economics. His crucial, yet utterly simple, idea ...

This week “The Economist explains” is given over to economics. For each of six days until Saturday this blog will publish a short explainer on a seminal idea. ECONOMISTS can usually explain the past ...

Nash equilibrium helps predict other investors' moves; no net gain by altering your long-term strategy. A dominant strategy excels regardless of others' actions, aiding investment decisions. Using ...