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LESSON 2 · Think Like Sherlock

Evidence is Not Proof

A fingerprint at a crime scene is evidence, not proof. It tells you someone touched something — not when, why, or in what context. Evidence is raw data.

Every piece of evidence supports multiple possible explanations. A wet sidewalk might mean rain, a broken sprinkler, a spilled drink, or morning dew. Choosing between explanations requires converging evidence — multiple independent clues pointing to the same conclusion.