Is this even possible?
Focus On the Center, then move your head back and forth
Are these lines straight or do they bend?
If you stare at this, you will see gray in between the boxes, where did that come from?
You should see two images, a face and a word. If you cant see the word turn your head to the right.
This image looks like it is moving. If you concentrate on one black dot then it will stop but as soon as you look away, it moves again!
Is this book facing towards you or away from you?
and last but certainly not least, stare at the at the 3 dots in the center for 45 seconds then look at a bare wall, you will see a face. More important, notice whose face it is. Amazing, huh?
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