In contrast, the view was expressed that the distinction between primary and secondary rules was intellectually tempting, but rather artificial, hard to maintain, difficult to apply in practice and sometimes invalid.
反之，也有人认为，初级和次级规则之间的区分从知性上说，是具有诱惑力，但是相当牵强，不易维持，在实际上不易适用，有时候起不了作用。