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Post by Avinalaff on Jun 5, 2016 1:46:15 GMT
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Post by Avinalaff on Jun 5, 2016 2:02:59 GMT
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Post by Avinalaff on Jun 5, 2016 2:03:20 GMT
How many faces?
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Post by Avinalaff on Jun 5, 2016 2:03:44 GMT
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Post by Avinalaff on Jun 5, 2016 2:13:18 GMT
This will blow your mind........... Both the squares A and B marked in this chequerboard, designed by Edward H. Adelson, are the same shade of grey, however you may struggle to tell your brain that this is so.
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