  Most writers have, instead, favoured the view that rights are to be analysed into other, more basic, notions, principally those of duty, permission and power, with perhaps the addition of other criteria. This means that not all rights will be of great importance. Their importance will vary with the strength of the grounds for the duty, permission or power. Before looking more closely at these accounts, another point should be mentioned. Theorists are divided between those who think that rights are, as it were, the ‘reflex’ of the duty, permission or power, and those who think that the right has a priority over them. The question is whether the duty, etc, grounds the right, or the right the duty. Most older writers (e.g., Bentham, Austin, Hohfeld, Kelsen) appear to have adhered to the first view, whilst more recent writers (e.g., MacCormick, Raz, Wellman) take the second. The second view has the implication that the force of a right is not necessarily exhausted by any existing set of duties etc, that follow from it, but may be a ground for creating new duties as circumstances change. This latter view seems to accord better at least with the way that constitutional legal rights work.