This an incredibly long video of Youtuber Veritasium discussing and demonstrating the Ames rotating window illusion and how it illustrates how we don’t directly perceive external reality. What does that mean? No clue, but I do have a headache now so I guess I have this video to thank for

This is a video of the winner of the ‘Best Illusion Of The Year’, as created by mathematician Kokichi Sugihara of Meiji University in Tokyo. The 3D Schröder Staircase “looks exactly the same right-side-up and upside-down, its left end looking taller than its right.” It was pretty fun to watch,