In Zenner v. Prince Edward Island College of Optometrists, [2005] 3 SCR 645, one of the conditions imposed by his professional body on an optometrist who had lost his licence was that he complete an accredited medical ethics or optometrist course. The problem was that, at the time, the College had not accredited any such course! The condition was impossible to fulfill. There being no rational basis for imposing an impossible condition, it was struck down.