I have seen this term come up again and again in a number of books that I have read as well as interviews with various people. I am not really sure what this term means. Can someone explain this concept to me? The only thing that I have been able to figure out is that it seems like something that is a "figment of our imagination" to coin a phrase. Or, something that isn't real, that we are just thinking we saw/experienced but didn't really.
