Eyewitnesses can be completely sure and completely wrong. Hold your memories with a little humility.

Remembering is not playing back a recording. Each time you bring something up, you rebuild it out of fragments and expectations, and the rebuild gets filed as the original, which is why an old scene can feel vivid and still be wrong in the details that matter. The sureness comes from the rebuilding, not from the accuracy.

This matters most in arguments about the past. When you and somebody disagree about who said what, try holding your version loosely enough to say you might have it wrong. You lose nothing, and it is the only move that lets a stuck disagreement actually move.