Invisible wrote:
> Assuming our hypothetical 4D world has 4D atoms and 4D gravity, I 
> imagine your 0-thickness body would slip between the microscopic gaps 
> between atoms...

Since clearly the electromagnetic forces would remain three dimensional? 
  I'm not sure it's possible to talk about what it would actually mean 
to superimpose a three and four spatial-dimensional laws of physics in 
this way in a coherent manner, and at the very least doing so would 
require a significant amount of analysis to make sure you've correctly 
coupled the two.

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