@bot @hidden @MisterRogersSnapped @ringo
Used to work in a vision lab, so there was always a new illusion every few weeks. I like this one since it's a physical object.

And the way I understand it, the brain is a prediction engine more than a sensory processing engine, since processing every new piece of sensory information takes a lot of time and (metabolic) energy. Meaning that it decides beforehand what you should see, and only uses visual inputs to course-correct. So most of what you see isn't physical reality, but your "memory" of what physical reality should be.