Your argument is the main point he makes in the intro and is the strongest argument against the theory. But the arguments the author lists himself are not very

Your argument is the main point he makes in the intro and is the strongest argument against the theory. But the arguments the author lists himself are not very strong: 1. "The swordsman theory is predicated upon the belief that castles were intrinsically designed as military structures" => "just because most were; there are a lot of castle like fortress that were actively used as defense sitations. 2. If staircases were genuinely engineered for military purposes, then we should always find that they turn clockwise. => No, opposite, since not all were used military it might not have been a priority for all, and also not all builders might have been aware of this strategy. etc...