Precedents

A precedent is a past decision or outcome that is used to guide or justify a current one. In law, precedents (case law) bind or persuade future courts: what was decided before shapes what can be decided now. The logic extends beyond courts. Organisations have precedents in how they have handled similar situations. Negotiations set precedents for what is acceptable. Personal and institutional behaviour creates patterns that others — and future selves — will cite. Precedents reduce the need to re-decide from scratch; they also constrain deviation. Every decision you make is a potential precedent for the next.

The force of precedent comes from consistency and predictability. When past behaviour is known, it creates expectations. Breaking precedent without explanation or justification costs trust and invites the question: why was that case different? So precedents are both a resource (you can point to the past to support your position) and a constraint (you must either follow or distinguish). Distinguishing — arguing that this case is different in a principled way — is the art of managing precedent without being trapped by it. Bad use of precedent is cargo-culting: doing something because it was done before, without asking whether the prior context still applies. Good use is pattern-matching with a check: does this situation match the prior one in the ways that justified the prior outcome?

Strategic implications: (1) the first time you do something, you are setting a precedent — choose with that in mind; (2) when you want to change course, you must either distinguish the new case or explicitly overrule the old precedent and explain why; (3) in negotiations and policy, the precedent you set in one deal or ruling will be cited in the next. Precedents compound. Design them deliberately.