What a Photograph's Caption Does and Doesn't Confirm
Launch library · evergreen read

A caption tells a reader what someone, at some point, believed the photograph showed, but that belief is not automatically the same thing as an established fact, particularly when a caption was added well after the photograph itself was actually taken by an unrelated hand years later.
Captions can be wrong for entirely ordinary reasons: a name misremembered years later, a location assumed rather than confirmed, a date estimated from context rather than genuinely known with any real precision at the time the caption was finally written down, sometimes years after the photograph itself.
Treating a caption as a lead to verify, rather than a fact already settled and closed, protects a writer from repeating an old error simply because it happened to be printed neatly and confidently beneath an otherwise convincing image, since confidence in the caption's tone has no real bearing on whether its underlying claim actually holds up.