 The Nagel model of reduction parallels the so called “deductive nomological model” (DN-model) of explanation according to which explaining some fact involves showing how its truth can be deduced from a set of other truths containing at least some laws. For example according to the DN model, one explains the acceleration of a falling body by showing how it can be deduced from Newton’s laws. The Nagel model of reduction thus seems to suggest that a reduced theory is directly explained by the corresponding reducing theory.