He suggests the holographic concept might be limited to two-dimensional projections from three-dimensional space, questioning if we are a hologram of a four-dimensional reality.

“Why can't we be a three-dimensional hologram of a four-dimensional space?”

The holographic principle suggests that the entire three-dimensional universe can be encoded as information on a two-dimensional surface.

“The idea was that everything about the black hole that all the information a black hole could possibly contain is equivalent to the amount of information that can be packed on the surface and nothing more and you cannot, and they've proven this over many years, back since Hawking, you cannot have mo”