Common Law

Common law is a legal system built not from top-down legislation but from the accumulated weight of judicial decisions over time. Each ruling becomes a precedent that shapes future cases through the doctrine of stare decisis — "to stand by things decided." Unlike civil law systems that derive authority from comprehensive written codes, common law evolves case by case, adapting to new circumstances while maintaining continuity with past judgments. The system encodes a decentralized, evolutionary logic: no single authority designs the rules from scratch. Instead, principles emerge from thousands of individual disputes, each one refining the body of law. This makes common law resilient and adaptive, but also path-dependent — early decisions compound into structural constraints that are difficult to reverse.

Recognize that in any system without a comprehensive written code, common-law logic is already operating. Past decisions become precedents whether you intend them to or not. Use this deliberately: document key decisions and the reasoning behind them so future actors can apply the principles consistently. When inheriting a system shaped by accumulated precedent, resist the urge to rewrite everything — understand why existing norms exist before replacing them.

Common law builds legal systems from accumulated judicial decisions rather than top-down codes. Each ruling sets precedent, creating an evolutionary, path-dependent framework that adapts case by case while maintaining continuity.