Archeology is consistently pushing the date(s) of various previously unknown cultures/civilizations back in time. This article overlooks some additional discoveries worldwide which also indicate a much older time line (Puma Punku, Original Sphinx before Pharoah head)
What is needed now is a coherent theory as to why these cultures/civilizations disappeared and our species spent perhaps thousands of years in recreating the abilities/skills that are demonstrated by these ‘surprise’ finds.