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 Why do we care about the colour of the dress? Bevil Conway The Guardian ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive The Dress How To See White And Gold White Gold Blue Golden Dress Illusion Perception Black