Additions:
1. Figures with identical area:
2. Non existing triangle:
3. The blue line is a continuation of the black one? Not right!
4. Are the grey colors different tone? Wrong - they are the same color:
5. Another "moving" static picture:
6. A face or a woman moving to a bridge?
7. The fat black lines are actually parallel
8. Look at the black squares. Do you see non-existing grey dots?
9. The horisontal lines are actually parallel:
10. The red is lighter when is surrounded by white, than when it's surrounded by black:
11. The orange circles are equal:
12. Is it a spiral? No, it is not! Check it out by following with finger: