 So the objection goes. (The version presented above is Brock’s from Brock 1993 — for some of the detail of Rosen’s argument, see below or Rosen 1993.) Two direct responses have been offered to this problem in the literature. The first, by Peter Menzies and Philip Pettit (Menzies and Pettit 1994), conceded that the objection “is decisive against the letter of the Rosen proposal” (p. 29), and sought to provide modified fictionalist biconditionals to produce a modal fictionalist theory which would not be susceptible to the Brock/Rosen objection. Nolan and O’Leary-Hawthorne 1996 produced a version of the Brock/Rosen objection which they believed circumvented the Menzies and Pettit solution offered in section 3 of Menzies and Pettit’s paper. Section 5 of Menzies and Pettit gave another translation scheme meant to avoid the Brock/Rosen objection; it is argued in the following supplementary document that this scheme too is unsatisfactory.