Fermi's Paradox came up in a dream once. The explanation, according to the dream, is that Earth is in quarantine. The powers that be in the Galaxy put a communications blocking bubble around the solar system of all new technological civilizations for 10,000 or 15,000 years. The point of the exercise is that new civilizations are like teenagers, dangerous and unaware of their power to wreak havoc. This is especially true of newcomers that discover inter stellar travel while not yet having complete control over their atomics. So they just wall us off until we either 1) destroy ourselves, or 2) grow out of our galactic adolescence.
The dream went on to explain why we see UFOs that don't communicate with us. They are outlaws breaking the quarantine. Humans, said the dream, have unique language abilities unknown elsewhere in the galaxy. A single human could write more and better code than teams of hundreds in the next-best software civilization. So the UFOs are from some of the shadier civilizations out there and they come to kidnap code slaves. They have to stay stealthy or they will get caught.
This was a real dream I had about 10 years ago. And yes, I was asleep at the time. The story is obviously full of holes, it was only a dream after all, but intriguing.