 This reaches a methodological issue in the philosophy of law. Some consider that the character of law’s authority is a matter for descriptive analysis fixed by semantic and logical constraints of official language and traditions of argument. Others maintain that such analysis is impossible or indeterminate, and that we are therefore driven to normative arguments about what legal authority should be (see Soper 2002; Finnis 1979: 12–15). Crudely put, they think that we should understand law to claim only the sort of authority it would be justifiable for law to have. Such is the motivation for Friedrich Hayek’s suggestion that