UFO sightings have been “documented” going back centuries, same as with crop-circles. If UFO’s are “real” I think the two are directly related and evolving to increasing complexity as does all life. [And no, this does not violate the law of thermodynamic entropy which applies to closed systems.] If my conjecture is correct then we have nothing to fear from these particular secretive aliens, we might even be pleased to meet them. After all, they are apparently benign and evidently possess the greatest sense of humor we mere humans have ever been exposed to; they have been playing us for long, long time.

If "The Truth is Out There," I’d bet our alien agent provocateurs are laughing their asses off – or whatever reasonable facsimile they might have.