This paper takes it as a premise that a distinction between matters of fact and of law is important in the causal inquiry. But it argues that separating factual and legal causation as different elements of liability is not the best way to implement the fact/law distinction. What counts as a cause-in-fact is partly a legal question; and certain liability-limiting doctrines under the umbrella of “legal causation” depend on the application of factual-causal concepts. The contrastive account of factual causation proposed in this paper improves matters. This account more clearly distinguishes matters of fact from matters of law within the cause-in-fact inquiry. It also extends the scope of cause-in-fact to answer some questions currently answered by certain doctrines of legal causation—doctrines that, it is argued, are more naturally seen as applications of our ordinary causal concept than as noncausal liability-limiting devices.

It is widely accepted that vagueness in law calls for a specific interpretation of the law—interpretation that changes the meaning of the law and makes it more precise. According to this view, vagueness causes gaps in the law, and the role of legal interpretation in the case of vagueness is to fill such gaps. I argue that this view is mistaken and defend the thesis that vagueness in law calls only for an application of the law to the case at hand, leaving the meaning of the law intact.

Why do we grant religious exemptions? Many distinguished scholars and judges have been drawn to the idea that conscience is entitled to special protection, because a person in its grip cannot obey the law without betraying his deepest, most identity-defining commitments. The weakness of this justification is shown by philosopher Harry Frankfurt's account of what he calls “volitional necessity,” which clarifies the structure of the argument that invocations of conscience imply. Frankfurt shows that a person can be bound in this way by allegiances that there is no reason to respect; volitional necessity can arise from anything at all that a person cares about. Conscience is thus a poor basis for claims upon other people. Accommodation must rather depend on some idea of the value of religion.