Experts from a US museum believe it could be one of the oldest examples of advanced surgery. The Museum of Osteology in Oklahoma said the skull is reported to have been that of a man who was injured in battle before undergoing surgery to implant a piece of metal in his head to repair a fracture.
We, the “modern humans”, would do so many mental gymnastics but to accept the apparent fact that “ancient humans” were in no way less smarter than us.
In reality intelligence was about the same, just less existing knowledge to stand on.