white gold or blue black dress Roya News Scientists explain why The Dress

And he said: "Colour isn't something that exists in the world

Big names like Ellen DeGeneres began weighing in

The debate seems to have all started on Tumblr, with a post earlier this month that read: "guys please help me - is this dress white and gold, or blue and black

And if you participated via a tweet, a click on a poll or an argument at the dinner table, you likely contributed in some small way to the advancement of our understanding of color perception as we know it

One can hardly ask people if they are exposed to more short- or more long-wavelength light

"Under most circumstances, we're pretty good at seeing it the same way."