Ten years ago, a photo of a dress posted on Tumblr sparked a massive debate: was it blue and black or white and gold? Millions argued online, and even celebrities joined in. Scientists later explained CMV: Change my view from seeing this dress as blue and black to seeing it as white and gold. : r changemyview 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, Optical White Black Dress Illusion Color Illusion Optical Illusion Mustard And Blue Dress Optical Yellow Blue