What makes evidence trustworthy?

Evidence is information that helps us judge a claim. A measurement, a photograph, a record, or a person's account can all serve as evidence. Their usefulness depends on the question being asked and on how the information was obtained.

Evaluating evidence is not a search for one source that can never be wrong. It is a way to understand what a source can establish, where mistakes might enter, and what further checks would matter. This lesson gives you a practical method for making that judgment.