ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive 10 years ago, a simple photograph of a dress sparked a global debate unlike anything seen online before. Posted in 2015, the image caused people to argue intensely over whether the dress Eleven years ago, a single photo posted on Tumblr sparked one of the biggest internet debates of all time. The dress instantly divided the world, some swore it was white and gold, Zapakasa Women Sky Blue Prom Dress with Appliques Tulle A Line Spaghetti Straps Party Dress Is The Dress blue and black or white and gold? The answer lies in vision psychology Psychology The Guardian