  Law is sometimes required to make judgments about actions performed under necessity due to exigent circumstances. Sometimes persons harm the interests of others in order to save themselves or others from death or serious injury from causes beyond their  control.[18]  Coercion, however, presents a more complicated set of issues for making judgments of responsibility than do cases of natural necessity. Coercion involves a strategic and dynamic interaction between two agents — coercer and coercee — and the standard used to judge the coercee's responsibility for acting under coercion can affect that strategic situation. The principles by which we judge a coercee's responsibility for acquiescing to coercion may affect whether it is rational or productive for a would-be coercer to attempt coercion in the first place. (By comparison, in cases of bad luck and natural disaster, the situation is simpler because the behavior of the weather, unlike the behavior of coercers, is unaffected by the incentives facing those who might be pressured into acting under its power.) If we are permissive in limiting the responsibility of coercees, this will make acquiescing to coercion a more reasonable option; if instead we are stingy in limiting responsibility for harms caused under coercion, coercees may be much less likely to acquiesce to a coercer's threats. But if a (would-be) coercer knows that a potential victim will be unyielding to his threats, then coercion becomes a less productive or reasonable means to use. So in choosing a principle that justifies coercees in acquiescing under coercion, we need to take into account that this principle may alter the dynamic between coercer and coercee in ways that may in turn affect the rationality and fruitfulness of using coercion.