I've been thinking about "the dress" for 10 years. Here's what I've learned. 10 years ago today, this dress was posted online, turning into a viral phenomenon. Viewers couldn't decide if the dress was blue and black, or white and gold. It was later confirmed White and gold dress: Here's the science behind why some people see blue The Mirror The world's most famous optical illusion turns 10 years old Creative Bloq 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