You can see them now, right?
This little visual trick, which has been all over the internet, is a variation of the Coffer Illusion, a top 10 finalist in an optical illusion competition from back in 2006.
While most people see just boxes at first, it can be tough to “unsee” the circles once you see them.
In this image there are 16 circles. Don't you find them? Look again carefully & discover the 'coffer illusion' https://t.co/zPpephKSos pic.twitter.com/fnzOFI83GP
— Massimo (@Rainmaker1973) August 9, 2017