Holographic Universe Theory

Is the reality that we experience just a 3D projection of 2D information that sits on the edge of space and time? Don't worry this doesn't mean that you're plugged into some Matrix like simulation, but you may simultaneously exist both here and on the edge of the universe where the two-dimensional version of you is being projected into this 3D version of reality. Come along as we try to get a grip on this weird theory.