Abstract
Climo and Howells argue that a comparison of counterfactual statements is the best approach to causation in historical analysis. In historical explanation, it is often difficult to distinguish causes from effects, real causes from potential ones, and epiphenomena from either causes or effects. The symbolic statement "A causes B" describes the actual world. Two statements using the parameters A and B may be formed which do not describe the actual world. By determining which of the statements, "If not-A then B" and "If not-A then not-B," is closer to the actual world, one can conclude whether A is a cause of B. Despite their claims, however, Climo and Howells do not prove that their method is superior to others in dealing with effects and preemption. Their method also has internal difficulties when dealing with epiphenomena and relations to the actual world