Wait a minute! That would mean that the ancient aliens that helped them build all those wild temples and structures out of huge rocks looked the other way during dinner?!
Gee, why wouldn’t the ancient aliens help them to learn how to farm, hunt, fish, open supermarkets...?
They not only looked the other way, they gave the neanderthals a first edition copy of "To Serve Man."
The ancient aliens tried to teach us farming and science and such, but we ate them instead.