The Holographic Universe. Leonard Susskind on The World As Hologram. What is the Holographic Principle? What It Means to Live in a Holographic Universe. When you look in the mirror, the image you see looks a lot like you—not exactly the same, because when you raise your right hand, your mirror-self raises its left.
What’s more, the mirror image is merely an assemblage of reflected light, without a physical body behind it. Despite these differences, you can see an important connection between you and your reflection. This type of mirror relation is a familiar and powerful form of symmetry.