A lot of illusions work so well we don't even consider them illusions anymore. For example movies are just flashing pictures. Pictures/monitors/cameras themselv

A lot of illusions work so well we don't even consider them illusions anymore. For example movies are just flashing pictures. Pictures/monitors/cameras themselves only need to capture 3 colors instead of the full spectrum (if we were mantis shrimps we would need 12!). I guess I was hoping there would be some HNer with specific expertise who can talk about how these tricks are applied in graphics. For example there was some buzz a few years back on how a company managed to trick the brain into seeing the color black in AR (which shouldn't be physically possible without blocking light).