The following illusion looks like a couple of blocks not doing anything. Can you see the words within these blocks? Try closing your eyes just a little bit, looking through your eyelashes just as you did with those silly 3-D photos.
Remember back in the day those 3-D pictures you had to fuzz up your vision to see the embedded image? That was all the rage for quite some time. They used to drive me nuts but I still did them anyway just to stretch the mind and vision. It wasn't as if I really accomplished anything other than to say "I can see it". I do love optical illusions though. I think the mind works in such mysterious ways. Not that I really want to find out how it works, but always say "aha"...now I get it.
Here's a hint in a smaller version:
So that's why I need to wear reading glasses...humph!
Have a superb Wednesday!