   As for the  Simplification of Disjunctive Antecedents (SDA),  Fine (1975), Nute (1975b), Loewer (1976), and Warmbrōd (1981) each object to the similarity analysis predicting that this pattern is invalid. Counterexamples like (29) from Mckay &amp; van Inwagen 1977: 354) have a suspicious feature.