Short My Own Brain

JD here and my brain has been blown by the guys at MR. TC and AT usually hit me up with some mind bending econ, but this is something that has broken my cognitive visual powers to the nth degree. In this image square A and square B are the same shade of gray.

No, I didn't believe it either. I looked it from every angle, I used every visual queue and I even tried some 3D glasses. Then KM hit me with this proof. Thanks KM, my brain is feeling less vulnerable now. My intuition will bounce back though, so be ready to jump on it long in the near future. Big time. JD out.