A piece of white paper looks white to you in a dark room, even if it’s technically reflecting less light than a piece of coal in the sun.

You know your 6ft tall friend hasn't turned into a hobbit just because they’re standing 50 yards away.

Without it, the world would be a chaotic, flickering mess of unrecognizable shapes. We wouldn't even recognize our own loved ones if they tilted their heads!.

is the brain's "auto-correct" feature that keeps the world looking stable even when your eyes see something else. It ensures that you recognize a friend's face as the same whether they are standing in bright sunlight or deep shadow, or see a car as the same size whether it's right next to you or a block away. Proposed Social Media Post Headline: Your Brain Is the Ultimate Photo Editor 🧠📸

Ever wonder why you don’t freak out when a car drives away and "shrinks" to the size of a toy? Or why your white sneakers still look white at a dim house party? That’s at work.

Your brain "subtracts" the lighting so a red apple looks red whether it's under a blue fluorescent bulb or golden sunset.