 All rights can be represented by Hohfeldian diagrams, like the diagram of the property right “molecule” above. (Halpin 2017) However, some diagrams of Hohfeldian incidents that we can construct do not correspond to any right. To take a simple example from Hart (1982, 191–92), your city council lacks the Hohfeldian power to award you a pension; so by definition you have a Hohfeldian immunity against your city council awarding you a pension. Yet it would be odd to say that you have a right against your city council awarding you a pension. You thus have an immunity, but not a right. Not all (collections of) Hohfeldian incidents are rights; it is only those (collections of) Hohfeldian incidents that have a certain function (or perhaps certain functions) that are rights. To take an analogy: all engagement rings are rings, but only rings with a certain function are engagement rings. What, then, is the function of rights?