 Allison points out that on this reading Kant’s reasoning appears to involve a non sequitur, since (2) supports only Kant’s having in mind that the unity of consciousness is a necessary condition for the representation of an object, and not for its also being a sufficient condition. Howell raises a similar concern: “In §17 Kant simply does not make this inference clear, and an air of blatant fallacy hovers over this part of his reasoning” (Howell 1992: 228; for an opposing view see Keller 1998: 80). But Ameriks argues that the B-Deduction should not be interpreted as providing an argument for the sufficiency claim, and a respectable case can be made for his reading (Ameriks 1978; Pereboom 1995; Patricia Kitcher 2011: 115–60).