Creative Speculation
In reply to the discussion: SKEPTIC - The Physics of UFOs [View all]RKP5637
(67,112 posts)advanced than us. In the big picture, we are not advanced at all, not at all, we're still trying to make it into the stone age if that. For a simple example, in the 30's about half of America didn't even have indoor plumbing. Our current technology is akin to crystal radio sets if even that advanced.
Also, I really doubt an advanced civilization would have any interest in this spinning ball of dirt at all. We have over inflated egos. Also, we use the trappings of our limited science ... if a truly advanced civilization visited this remote outpost, we likely could not even comprehend them. Much as you said, we would not even know they were here.
What is always amusing is when some think they would use some form of transportation means akin to ours ... They would likely use folded space ... and in fact, we well might be within multiple dimensions. ... and, we probably do not have in essence the vaguest idea of their technology.
The world is far more complicated than DU!