Thanks for that.
I did not realise Newcomb's formula had a built in cumulative gain component.
But, it makes some sense (gravity and all that).
The limited amount of variations 20,000 yrs either side of NOW seem somewhat irrelevant to the AoM topic? Especially when it is about things like rough chiselled Vultures which look to me more like the extinct Dodo birds, vague other animal depictions etc, with no care to plot identify Northern Pole centre point and such etc, but thanks again for the interesting information.