If you apply a cyan filter on top of red, it turns gray. But our brain doesn't like the fact that a traffic light is gray, so it does its best to convince us the light is still red.

If you apply a cyan filter on top of red, it turns gray. But our brain doesn't like the fact that a traffic light is gray, so it does its best to convince us the light is still red.

/r/interestingasfuck: Interesting As Fuck - For anything that is InterestingAsFuck - September 21, 2021 - 07:34