Powerless Type 0 civilizations on the Kardashev scale with nothing to offer anyone advanced enough to travel to Earth who have no interest in stacks...
In summary, grey aliens are just as fucked as humans treating humans worse than they do. Their civilization is evil because they have no control over...
The riddles were a repeated scenario. Everyone of every ethnic group and nationality on Earth in a train car, George W. Bush talking over an intercom...