These objects are simply impossible. They just can’t exist according to all laws of reality. Yet if you stare at these impossible objects long enough, you just might be able to wrap your mind around them.
COOL! The universe has its secrets. Extra dimensions of space might be one of them. If so, the universe has been hiding those dimensions, protecting them, keeping them coyly under wraps. From a casual glance, you would never suspect a thing. It's hubris to think that the way we see things is everything there is. -Lisa Randall, theoretical physicist via She Sings to the Stars