“But you go to a museum, that's not how they work. They've got a whole team, who knows where the ancient urn was found. One guy says what it was made out of, and he tells everyone. Another guy's carbon-dated it, so everyone on the team knows how old it is. They all pool their knowledge and come up with a best theory collectively. They're probably not always right; maybe that ancient Greek amphora is really an ancient Persian knock-off amphora, but they usually figure it out.