We have all had a the experience of listening to somebody drone on about some outlandish belief/behaviour/experience/whatever where the speaker was actually attempting to goad the listener in rebutting them. Then the speaker could take on the mantle of bieng the attacked party. Once they are "forced" onto the defensive, you become guilty of calling her a "primordial cow" instead of her genesis story a, well, uh, a primordial cow. C.S. Lewis might have just as easily believed in a Primordial Cow instead of Christianity but I doubt he would have begged to be attacked for it.