
experiments have shown that little kids are not able to recognize this 'intimate' couple because they don't have something like that in their brain. what they see is 9 dolphins. if you're having a hard time to recognize the dolphins in max. 3 secs your mind is already tainted.
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concentrate on the cross in the middle:

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what is it? a circle or a spiral?

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the red horizontal lines, are they parallel or not?

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just enjoy those:




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concentrate on the cross and move your head to the front and to the back:

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many thanks to my mother for always supplying me with nice things like these.