This sentence concluded a very short paragraph that apparently aimed to explore whether the hand sign could have a Masonic meaning. But instead of giving any explanation for their conclusion, the authors merely postulate the above without any given reasoning. I’m surprised to find this in what appears to aim to be a scientific analysis. Even more so would it surprise me if any conscious reader found this conclusion satisfactory.
Any thoughts?
However, there were numerous other fraternities and secret societies during that era, although they were typically gender-specific. Seeing both men and women using the same hand signals suggests these were likely common societal practices of the time. And since, presumably the hand positions are secret, they're not going to be immortalized in a painting.