"Avatar" was the international blockbuster that made 3-D movies commonplace in American multiplexes. Its director and multi-dimensional filmmaking's leading evangelist, James Cameron, ought to be happy. He's not.
It's not often that we pose questions like this to you, honored readers, and to be frank, we can't answer this one. However, some really smart physicists and their state-of-the-art machines are exploring the issue, and from the look of it this baffling notion might just be true.