This optical illusion is making its way around the internet today.
Take a look:
There are only four circles here and they don't touch. C'mon brain you can do this. pic.twitter.com/mDPLXwl9av
— Kyle Hill (@Sci_Phile) December 19, 2014
No really, stare at this photo a little longer. You’re supposed to be able to see the four circles (and yes, there are only four.)
Can you see them?