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 Remember "The Dress Illusion"? The dress was a viral phenomenon on the Internet in 2015. Viewers of the image disagreed on whether the dress depicted in a photograph was coloured black and blue, TIL that the 2015 Internet phenomenon "The Dress" revealed differences in human colour perception, which have been the subject of ongoing scientific investigations into neuroscience and vision science : r todayilearned 04.16.2015 Style Charade That Dress, and the Humbling Reality of Others' Perceptions The Wisdom Daily