Yea, but think about it.  When you have a hologram, you have both a 2 dimensional and 3 dimensional version of something at the same time.  Physically a hologram has two dimensions, but contains information to reproduce a 3d image.  The concept of a hologram proves that at least the idea of representing 3 dimensions in 2 dimensional space is possible at some capacity.  

 

Holograms are created by bouncing a laser off an object onto a film.  Say you could convert the entire universe into a hologram in real time.  All of Einsteins laws still exist in both the universe and in the 2d hologram of the universe.  But the laws just would look differently while in the 2d hologram.    

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