In 2015, a photograph of a dress went viral, dividing viewers over whether its colors were blue and black or white and gold. This optical illusion highlighted differences in human color perception Spotlight Snap TheDress one year on eight things we learned from the viral phenomenon Social media The Guardian Remember the Old White and Gold or Black and Blue Dress Meme? Well, Through This Pic You Can Now See What the Other People are Seeing. : r Damnthatsinteresting