“They went down to Walmart and picked up a truckload of Mexicans.”
Actually, the Neaderthals imported Homo Sapien Sapiens to do the work that Neaderthals wouldn’t do. Was working great for a while.
They are talking about 5000 years ago, long after the Neanderthals died out, just a few hundred years before the Great Pyramid was built. This is upwards of 10,000 years after the cave paintings of Spain and France.