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 White And Gold Golden White White Gold Dress Vs Blue Black Blue And Black Dress Blue High Neck Bridesmaid Dresses Azazie Blue High Neck Bridesmaid Dresses Dusty Blue Dresses Elegant Dusty Blue Gowns Lady Black Tie This explains how the blue black white gold dress illusion was possible. But it doesn't explain why some people saw it one way and some saw it the other, and no one seemed to see