[BenKenobi]

History has actual facts.

F’rinstance I can’t say that the Battle of Waterloo was faught in any other year other than 1815.

Anthropology, can pretty much make up whatever they want.

[Verginius Rufus]

The battle of Waterloo took place in 1815, but if you chose you could say it took place in A.H. 1230, or in the year XXIII (French Revolutionary calendar)...or date it from the founding of Rome.

It seems to me that there is a factual basis to physical anthropology when they are dealing with fossils or DNA, but there is some guesswork because not everything can be explained--I don't think they have conclusively determined the relationships between all the pre-Homo sapiens hominid fossils, and at any time a new discovery can change what they think they know.