 This passage nicely indicates how inferential approaches to causation parallel regularity approaches. The regular connection between the presumed cause and the putative effect is expressed by certain laws. The putative effect must be inferable from the presumed cause using these laws if the former is an actual cause of the latter. Causation implies that there are covering laws, according to which the cause is sufficient for its effect (cf. Pap 1952 and Davidson 1967, 1995). At the same time, the above passage reveals logical empiricist scruples to talk about causation. Hempel and Oppenheim are hesitant to set forth the DN model as an analysis of causation and to say that the antecedent conditions of a DN explanation are causes of the explanandum if the latter is a particular event.