In this post, I gave a rough outline of a relevant part of Misesian methodology, that is, how he justified seeing other people as actors. You gave a different example, but his pragmatic mindset in this respect is perfectly analogous. If Ludwig von Mises committed the fallacy which you are talking about, either (a) I didn’t correctly re-state Misesian methodology in that post, or (b) I committed the same fallacy. Can you prove that one of those are true?