The best example is the salt at Carthage. Most people can tell you that the Romans sowed salt in the fields after destroying Carthage utterly. This level of detail is remarkable for an event that occurred in 146 BCE. What’s interesting about this vivid detail is that there is no contemporary evidence that they did anything of the kind. And there are good reasons to doubt the story. The expense would have been prohibitive: salt was much more expensive in the ancient world (soldiers were paid in salt) and the ambit of the walls around the city alone was 21 miles. No mention of salt occurs in the sources until the middle 1760s.