 Moreover, the modal claims (1)–(10) appear to be true for completely different reasons. For example, it may be held that the truth of (1) is due to the meanings of its constituent expressions; that (2) holds because it lies in your nature to be born of your actual parents; that (3) is true because the laws of nature preclude superluminal motion; that (4) holds because of technological limitations; that (5) owes its truth to the presence of insurmountable practical obstacles; that (6)–(9) are made true by the demands of morality, etiquette, the rules of chess, and the law respectively; and that (10) holds because the known facts prove Fred’s innocence.