The point is that "acting as if one believes P" and "acting as if one believes not-P" can sometimes be the same actings. This is what I meant by "inconsequential". I want to know whether, in your opinion, this is such a situation; that is, whether there is some imaginable behaviour (other than professing the belief) which would make sense if one believed that "1 is not a probability" but would not make sense if one believed otherwise.