Greetings..
To illustrate the point i have been trying to make:
The symbol for tai ji is a spiral .It represents the energy forces going out and coming in from the big bang. ( centripetal and centrifugal forces)
The originators of the various symbols associated with Taiji had no concept of the "Big Bang" or the "centripetal and centrifugal forces", although they may have identified sensations associated with such forces.. This is a projection of modern concepts on an ancient symbol, and it's inescapable.. you see, even the explanation of "the origins of Taiji symbology" are dependent on our projections of our understandings.. There is no manual for the interpretation of Taiji symbology, written by, or authorized by the creator(s) of the differing symbols.. it is inappropriate to tell others that their interpretation of ancient symbology is inferior to the interpretation that someone else feels strongly about.. it is a quest to define the indefinable..
While someone's explanation of the intracacies of geometric relationships within the traditional "Yin/Yang" (Taiji) symbol may be an intellectually stimulating exercise, i have strong personal doubts that those relationships were the motivating factors for the symbol's creation.. I am familiar with the "spiral symbol", but.. i find no broad historic use of the symbol relative to Taiji or much use of it at all.. The traditional Yin/Yang symbol can be found throughout Chinese art, writings, and symboloic representations, suggesting a broad application throughout the intellectual spectrum.. a common understanding of basic ideas.. contrary to the western notions of complicating things beyond reason.. simplicity has its merits..
Be well...
TaiChiBob.. "the teacher that is not also a student is neither"