 First horn: If exclusive cp-laws are reconstructed as some sort of strict law, then they will tend to be false. Typically, it will not be the case that all \(A\)s satisfying a completer condition \(C\) are \(B\)s, since the range of potentially disturbing factors is typically indefinable. For instance, the relationship between supply and price is not always as the law of supply says (or, as it seems to say prima facie), because an interfering factor might occur. In other words, special science laws that instantiate perfect regularities are—mildly put—“scarce” (Cartwright 1983, 45). Yet, if one supposes that the law is to be formalized as a universally quantified conditional sentence, then one counter-instance (due to a disturbing factor) to the universally quantified sentence means that it is false.