We conclude that in addition to later interbreeding events, the ancestors of Neanderthals from the Altai Mountains and early modern humans met and interbred, possibly in the Near East, many thousands of years earlier than previously thought.
The timeline concerning human events seems to get pushed further back upon each discovery. The rediscovery of Gobekli Tepe in Turkey, for instance, dates even further back than Sumerians along the Fertile Crescent which means that agriculture vs hunter/gatherer may have began sooner than previously believed.
"Reason obeys itself; and ignorance submits to whatever is dictated to it" -- Thomas Paine