The late Second Circuit Judge William Hughes Mulligan reportedly remarked that a "primary purpose of a dissent is, of course, to annoy the majority." See John D. Freerick, Remarks Delivered on the Occasion of the Presentation of the Fordham-Stein Award to the Honorable William Hughes Mulligan, 59 Fordham L. Rev. 479, 483 (1991). "Sour grapes" aside, what else motivates appellate judges to write dissenting opinions?