Is This a Simple Box or an Optical Illusion?

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Cyrus
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http://img168.imageshack.us/img168/4228/testriguk1.jpg

The back portion is a box. But depending on how you look at it, it becomes one of those boxes that is impossible to close without crossing itself. Its an optical illusion, that I made out of pure luck! I showed it to someone and they were puzzled for a good 10 mins. I stood there saying its a box, what's not to get? See, its right there. The guy was like, I don't see a box, how is this a box?

If you look at it just right, it looks like it has two cross braces supporting the front side at 45degrees.
 
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The main body is a hexagon with one cross brace missing. LOL
 
it's a weird isometric view, but i don't see what's impossible about it.
 
Is it supposed to be this sort of thing?
http://cnymagic.com/fun/Optical_Illusions/images/Impossible_Box.jpg
 
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Cyrus said:
http://img168.imageshack.us/img168/4228/testriguk1.jpg

The back portion is a box. But depending on how you look at it, it becomes one of those boxes that is impossible to close without crossing itself. Its an optical illusion, that I made out of pure luck! I showed it to someone and they were puzzled for a good 10 mins. I stood there saying its a box, what's not to get? See, its right there. The guy was like, I don't see a box, how is this a box?

If you look at it just right, it looks like it has two cross braces supporting the front side at 45degrees.

I see you are using Solidworks. That iso view can make things harder to make out. I use the Dimetric or Trimetric view when I run into that.
 
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