If your eyes follow the movement of the rotating pink dot,
the dots will remain only one color,

Stare at the black cross














However, if you stare at the black ' + ' in the center of the picture,
the moving dot turns to
green .

Now, really concentrate on the black ' + ' in the center of the picture. 

After a short period, all the pink dots will slowly disappear,
and you will only see only a single
green dot rotating. 

If you lose your concentration on focusing on the black ' + '
(by tracking the movement of the
green dot), the pink dots will reappear.

It's amazing how our brain works!  
There really is no
green dot, and the pink
ones really don't disappear ...  

This should be proof enough that we don't always see what we think we see.

COLOR TEST.GIF (18505 bytes)
ILLUSION.JPG (224811 bytes)
opii1.jpg (22679 bytes)opti2.jpg (15738 bytes)
opti3.jpg (22003 bytes)opti4.jpg (29648 bytes)
opti5.jpg (25471 bytes)opti6.jpg (25331 bytes)
opti9.jpg (48619 bytes)
SLIDE11J.JPG (22404 bytes)
SLIDE12J.JPG (27339 bytes)
SLIDE13J.JPG (36905 bytes)
SLIDE3JP.JPG (19206 bytes)
SLIDE5JP.JPG (17182 bytes)

Thanks Dave Parker, Zeynep Ersavci and Caroline Farrell

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