Image illusion
If you continue to focus on the cross in the center of the image you will notice that .. the circle of violet circles will soon DISSAPPEAR completely .. and you will see only the green spot (which is actually violet).
Look at the chart above and say the COLOR of the word, not the word itself.
Why is it so difficult?
Answer
Because the right half of your brain is trying to say the color, while the left side of your brain is trying to say the word
Count the men and watch how 12 men turn into 13 and
then back to 12 again. How do they do it?
then back to 12 again. How do they do it?
Ambiguity Spells Ambiguity upside Down
Count the Dots
See Parallel Lines look Crooked
Squares form a lens
Face has Liar written all over it
Musician or a Girl's Face