I hear about this imbalance for the first time, and reading about it for half an hour left an impression that no one tried hard to prove anything. The very fir

I hear about this imbalance for the first time, and reading about it for half an hour left an impression that no one tried hard to prove anything. The very first thing that begs to be done is to plot this imbalance on a time axis to see was it kept constant over time, or maybe people made clockwise stairs at first and switched to counter-clockwise later. But it is not the only possible correlation you can measure before assessing the hypothesis space. Does direction of a stair correlates with geography? With a number of times a castle changed his owner? With a size of a castle? ... I'm pretty sure you can get some idea of it all by studying historical sources. But I see no evidence someone bothered to do it. All I see people speculate a lot. In this situation, I believe the most reasonable will be to file the question as having no answer and to forget it as having no importance.