The holographic principle, derived from weirdness theorized to occur at
the boundaries of black holes, says reality could be a 3-D projection of a
2-D plane of information. It’s much the same way a hologram printed on a credit
card creates the illusion of a 3-D object but, as Hogan explained, we can’t
perceive the 2-D surface.
In other words...
perhaps we are all just like comic book characters who perceive their own world as three-dimensional, even though it's just generated by a two-dimension reality of the comic book page.