Juan Maldacena published a paper in 1997 in which he showed that you could consider the Universe to be a form of holographic projection. (Apparantly – I’ve only read about it – he’s a string theorist so by definition almost incomprehensible). This seems to tie in to the principle of the holographic bound. In the 1970’s it was shown that the amount of information in any space was proportional its area, not its volume. Weird, since space is not two-dimensional. A theory evolved to explain this – that the Universe is actually a holographic projection from the outside and only appears three dimensional here, within it. It was Jakob Bekenstein who came up with that, and implied that the Universe we experience is actually the inside of a black hole in the larger Universe.
So, if that’s true then reality that we perceive as material and final is more like the shadows dancing on the wall of Plato’s Cave. In his Allegory of the Cave he postulated that what we perceive is only the shadow on a cave wall of the “ideal” reality beyond and outside. According to Maldacena and Bekenstein- what we perceive as 4 dimensional space-time is actually a holograph inside a black hole of what is outside and beyond.
” According to the allegory, man’s condition is one of bondage to perceptions. When man is chained up with only a fire behind him, he perceives the world by watching shadows on the wall. He does not realize that there is more to be seen or known, and as such leads a largely passive, disinterested life. So long as his basic needs are met, he does not ask questions. Many believe that this is a statement about people who do not overtly seek knowledge or truth, but rather accept what they are told or what they can immediately experience.” Philos.org, Plato’s Allegory of the Cave.