  The reasons-based approach to analogical reasoning focuses on the justifications for the analogical case (for two very different accounts see Raz 1979, 201–6 and Brewer 1996). It considers the extent to which the rationale for the decision in the earlier case is applicable to the case at hand. Take the case of the impersonation of a boyfriend in the law of rape. Whether this situation is analogous to the impersonation of a husband depends on the reasons for the latter vitiating consent. There need be no single principle that underlies the rationale: it may rest on a number of factors that reinforce the conclusion.