A truly amazing optical illusion

Hello dear friends

In this post I've put up a very nice optical illusion for you that's well worth seeing...

When you look closely at squares A and B, you see that square A is gray and B is white:

But what I want to tell you, you may not believe! And that is that you're completely wrong, and these squares are exactly the same color. That is, both square A and square B are gray!

If you don't believe it, just use an image editor to cut these two squares out of the picture, put them side by side, and see that and are exactly the same color!

I hope you enjoyed this post...