2. Green Catastrophe: If you stare at the black + in the center, the moving dot turns to green.
3. Reality Shatter: Now, concentrate on the black + in the center of the picture. After a short period of time, many if not all of the pink dots will slowly disappear, and you may only see a green dot rotating.
What does this tell us about the nature of reality? There really is no green dot, and the pink ones really don’t disappear. If our brains are so easily fooled, what aspects of reality are we missing?