 This sentence has often seemed cryptic. But we find an example of such a mistake in one of our fragments. It is a passage from the later Roman author Macrobius, who quotes an excerpt in Greek assuming that he is quoting Aristotle’s words (ipsa Aristotelis verba), and where we see Aristotle denouncing an error of Euripides, who in one of his plays states that Aetolian warriors fought without sandals on their left foot. It is an error because those warriors habitually fought without sandals on their right foot. As benign as it may seem from a historical point of view, it is a deep flaw if one considers the impact on spectators. Imagine that spectators realize the error in a theater setting: the scene would no longer be tragic, and the error would become comical and provoke laughter.