1. Are you experienced in colour composition?! OK,
then have a good look at the following picture...

3. squares “A” and “B” the same?
Are the colours of the
squares “A” and “B” the same?

5. NO?
Have a closer look!...

7. Not convinced?! Go back if you want.
Nobody has changed the colour of the squares.
You have just witnessed an important
phenomenon about the funcion of the brain...

8. The brain interpretes the squares
as they should appear: Black or white,
shown here as a dark and light gray. It completely disregards that they have the same shade! The opposite squares suggest 2 different colours...
and your brain accepts this as a fact.

10. It shows that often we observe things
not as they are
but as we want them to be!