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From sshaw@fas.harvard.edu:
Are you sure that you want to reveal your secrets, showing us the other
views of the box?  Though there were several images with this optical
illusion in them, I feel that you did one of the better jobs in making
it easy to see it.

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From trioker@wanadoo.fr:
It's noticeable that three of us had the same idea of the "impossible" cube :
Jack Kelly, John Hoerr and I (JMarc Genevey). 
Of course, nearly each and every of Escher's picures could fit perfectly the
theme !

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From brendthess@aol.com:
The second freemish crate... better done


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From johnson@pharmacy.arizona.edu:
Like it, my favoprite of the three esher entries this time. Well done showig how
the illusion works, too!

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From gmccarter@hotmail.com:
The strong shadows from the single intense light source detract from the
illusion.

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From clem@dhol.com:
The extra crates showing how the trick is done are a nice 
touch.

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From sdevet@istar.ca:
Nice! Lots of these things this round, though.

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From bobfranke@halcyon.com:
Interesting geometry.  For improvement experiment more 
with the scale and rotation of the wood grain textures.


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From file:
Good pic, but everyone had to make the cube...