A lovely vase? Are the horizontal lines parallel?

A lovely vase?

A lovely vase?

Are the horizontal lines parallel?

Are the horizontal lines parallel?

Are the leaves really waiving?

Are the lines horizontal and parallel?

Are the lines horizontal and parallel?

Are the lines horizontal and parallel?

Are the lines horizontal and parallel?

A cube in a room or a cube with a bit missing?

Are the lines straight?

Are the lines straight?

Are the squares A and B the same color

Are the squares A and B the same color

Are the wheels really turning?

Can you see the eyes rotation?

Can you tell what this is a picture of?

Can you tell what this is a picture of?

Do the gears rotate slowly?

Do the white arrows exist?

Do the white arrows exist?

Duck or rabbit?

Duck or rabbit?

Face or Eskimo?

How many black circles can you see?

Is the book pointing towards you or away?

Is this a level balance?

Is this a level balance?

More than just three packman?

More than just three packman?

Are the centers color the same?

Are the centers color the same?

Stare at the cross for 60 Seconds and then click “Solution” to remove the color. You should see a colored after glow

Stare at the cross for 60 Seconds and then click “Solution” to remove the color. You should see a colored after glow

Three lines make a?

Three lines make a?

What do you see?

What do you see?

How does your head feel?

Book 2 Coming soon!