Unconscious inference, or unconscious conclusion, is part of a theory on visual perception that says that human vision is incomplete, and details are inferred by the unconscious mind to create a complete picture. Our brains are filling in the blanks, like a ‘connect the dots’ game. The world has provided us with a lot of existing forms of magical illusions. Video includes Helmholtz theory, flash-based distortion effect, depth perception, stereotypes, motion parallax, depth of motion, tromp l’oeil, forced perspective effect, size constancy, the moon illusion, and camouflage.