From what happens if you fall into a black hole to what the universe was like right after the Big Bang, thinking of ourselves as holographic might just provide the answer.
According to Professor Marika Taylor, a theoretical physicist from the University of Birmingham, the universe is actually two-dimensional.
However, just like when you watch a 3D movie on a flat screen, the images on that 2D surface appear to have depth because of how they are projected onto it.
So, while you might see the world around you as a complex three-dimensional structure, Professor Taylor claims this is only an illusion.