I consider that to be physiology, not so much anthropology.
It’s like a botanist knowing how plants relate to one another.
Outside of the physiology there’s not much of a factual basis, that I can see in anthropology, and a whole heap load of conjecture.
You can get that with History as well. Empirical history is only part of the overall discipline.
ok, so genetics isn’t science? nor is forensics? By finding a penny with the date of 1900 in an undisturbed site makes a pretty clear case that that penny was not dropped before 1900, giving a reference for human activity timeline. Now saying that that penny was used for religious purposes would be beyond conjecture unless it was at the bottom of a known religious shrine etc.