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 ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive MmE5MTRjYWQ4MDNi.mp4 White and gold or blue and black what colour is the dress? An eyewitness gives a definitive answer The Independent The Independent