The limited amount of variations 20,000 yrs either side of NOW seem somewhat irrelevant to the AoM topic?
Only if the AOM can prove that the Precession of the Equinoxes had a starting point outside of the parameters of his "sealed deal."
Even using Newcomb's Formula, there is a 7000 year discrepancy over 50000 years. The AOM is within this range with his 40000 year old cave painters. To me, it's not science. It's just rough guesswork coupled with joining dots which could be whatever shape one's heart desires.
But then, unlike the AOM, I'm not a self professed expert.