 At one end of the spectrum sits the maximally permissive view of original appropriation. This view denies there are any constraints on use or appropriation (Rothbard 1978, 1982; Narveson 1988, ch. 7, 1999; Feser 2005). Thus, agents may appropriate, use, or even destroy whatever resources they want (assuming, of course, that they violate no one’s self-ownership in the process). As a result, this view sees natural resources as initially unprotected. However, this is not a very popular view, as it simply ignores the problem above: property relations can threaten people’s liberty and even self-ownership, irrespective of their own voluntary choices or wrongdoing. Such a theory does not live up to libertarian ideals very well.