 However, Nozick focuses on two factors that severely complicate the task of identifying due compensation for boundary crossings. The first is fear (65–71). Here is one way that fear complicates the identification of due compensation. Suppose we treat the right that each individual has not to have her forearm broken as a claim protected by a liability rule. And suppose further that we know what the due compensation is for having one’s forearm broken. On this basis we decide to allow unconsented to forearm breaking as long as the forearm breaker duly compensates the subject of his ministrations. The effect of this will be to make many people fearful of having their arms broken who will never receive compensation for that fear because their arms will not in fact be  broken.[20]  Or if people are to be compensated simply for their fear, individuals whose conduct induces fear may be required to make compensation payments even though they never in fact break forearms. These sorts of problems are mitigated if the right not to have one’s forearm broken is treated as a claim protected by a property right.