A three dimensional pixel. A hologram compresses 3D information onto a 2D representation. Two different representations of reality. The world is a pixelated world, not a voxelated world. It’s a hologram.
We know our cosmic horizon of the observable universe is at least 1/1000th in volume of the size of the known universe through observation.
In his words, The universe is at least 1000 times larger in volume than the region what we can ever see. The rest is beyond our horizon. This is like an event horizon of a black hole, but it is a cosmic horizon.
What is the meaning of the stuff we can never detect?
How can we confirm it by real observation?
What is the proper description of a world that is bigger than the cosmic horizon? 
Is our cosmic horizon a two-dimensional scrambled hologram of all that lies beyond it?
Leonard Susskind on The World As Hologram.
