 This brief discussion of the explanation of eclipse of the moon brings us back to a point that was already made in connection with Aristotle’s explanation of the production of an artifact such as a bronze statue. There too we are required to look for the most accurate description of the efficient cause, which is to be identified with the art of bronze-casting a statue rather than the artisan. It is possible to build on both examples to conclude that Aristotle is concerned not only with finding the relevant kinds of causes but also with giving the most accurate description of those causes. By his lights, it is only the most accurate description of all the relevant causes that gives us the full explanation, and thereby scientific knowledge, of something.