I’ll see your forensic science and raise you unobserved conclusions- what tool/knife type was used? Are we even certain these are human(oid???) bones and how was the age determined? How were the gnaw marks determined to be of the same creature type that the bones were- all unobserved conjectures. As a scientist/engineer, I am very skeptical of that which is concluded on by assumption- I once saw a bridge built with certain assumption....they were wrong, with deadly conclusions; glad it was in a South American country and not ours.
IOW, you're not a scientist. Quit trolling.