Stare at the black dot for a few seconds. The gray haze wil...
How can this be?...
Is the center square moving? Nope!...
Are either of the rings moving? They're both stationary....
Look at the chart and say the color, not the word!...
OK, this one REALLY looks like it moves when you stare at it...
Scroll up and down. Is this image doing the wave? Nope! I...
How many legs does this elephant have?...
Are these dots flashing? No - it's an illusion!...
The objects aren't moving. Cool, huh?...
Are the horizontal lines parallel or do they slope? They're...
These lines are actually parallel - they just look slanted....
The lines are straight. Hold up a notecard or a piece of pa...
This circle is actually round!...
Although it looks like the inner circle on the left is large...
These two figures are actually the same size!...
These two rectangles are actually the same size!...
Squares A and B are the same color! Don't believe it? Open...
There's only one shade of green in this picture....
This isn't a continuous spiral - it's actually a bunch of ci...