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 Gold and white or blue and black?' optical illusion dress from 2015 found at yard sale 9Honey Is The Dress blue and black or white and gold? The answer lies in vision psychology Psychology The Guardian ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive