Zero-sum vs Non-zero-sum

The fundamental distinction between interactions where total value is fixed (zero-sum: poker, market share competition) and interactions where total value can change (non-zero-sum: trade, knowledge sharing, innovation). Robert Wright's 'Nonzero' argues that human progress is driven by expanding the scope and frequency of non-zero-sum interactions. The strategic imperative: correctly identify which games you're playing, because the optimal strategy differs radically between zero-sum and non-zero-sum contexts.

When to use it

When facing strategic decisions under uncertainty; when multiple stakeholders have competing interests; when the stakes are high and reversibility is low.

How it can help

Provides frameworks for navigating competitive landscapes, allocating resources under uncertainty, and making high-stakes decisions with incomplete information.