But it is unclear exactly what requirement one violates.   Additionally, it is unclear whether the requirement violated would be  “normative” in the sense that one ought not to violate it.  In other  words, it is unclear whether, in being instrumentally incoherent, one  violates a requirement of reason, in the sense of “reason”  identified earlier.  In the remainder of this section, we’ll consider  some possible answers to these questions.