If something works why fix it or make it more complicated. A hammer is just that a hammer. It works the same way today as it did over 500 years ago. Why should scientists be surprised that early stone agers used pretty much the same tools as many other early style tools.
40,000 year old evidence that Neanderthal's wove string. Contrary to popular belief, Neanderthals were no less technologically advanced than Homo sapiens. Researchers have discovered the first evidence of cord making, dating back more than 40,000 years, on a flint fragment from the prehistoric site of Abri du Maras in the south of France. Source 3q.