Follow your curiosity

What discovery has been shared with you?

FACTREE gives you something interesting to discover every day — and something worth talking about together.

Start with one fact. Explore it, go deeper, then follow whichever branch catches your imagination.

Choose subjects for a surprise

Exploring any topic

Begin your discovery

Your next discovery is one click away.

Choose one or more subjects above, or leave Any Topic selected and let curiosity decide.

History

Common Law

Quick fact

The doctrine of precedent means that a decision in a higher court is binding on lower courts, creating a hierarchy that ensures consistency. Over time, a series of decisions forms a body of law—hence the term 'common law'—which is as powerful as any statute.

Why this is interesting

You've likely heard of 'judge-made law,' but did you know that in many countries, a single court decision can shape the law for centuries? How does a court ruling become a rule that binds millions?