automatically mean that the question is impermissibly vague and can never form the basis of a perjury charge. See, e.g., H.L.A. Hart, Positivism and the Separation of Law and Morals, 71 Harv. L. Rev. 593, 607 (1958) ("A legal rule forbids you to take a vehicle into the public park. Plainly this forbids an automobile,

automatically mean that the question is impermissibly vague and can never form the basis of a perjury charge. See, e.g., H.L.A. Hart, Positivism and the Separation of Law and Morals, 71 Harv. L. Rev. 593, 607 (1958) ("A legal rule forbids you to take a vehicle into the public park. Plainly this forbids an automobile,

automatically mean that the question is impermissibly vague and can never form the basis of a perjury charge. See, e.g., H.L.A. Hart, Positivism and the Separation of Law and Morals, 71 Harv. L. Rev. 593, 607 (1958) ("A legal rule forbids you to take a vehicle into the public park. Plainly this forbids an automobile,