On Saturday, January 19, 2019 at 5:42:12 AM UTC-6, agrays...@gmail.com 
> Since it seems conceptually impossible to model a theory with DISJOINT 
> discrete spatial units, thus requiring the units to be juxtaposed, do such 
> theories acknowledge difficulty of motion between the units, which might or 
> might not have boundaries? TIA, AG

In quantum space or quantum spacetime approaches (like loop quantum 
gravity, casual dynamical triangulation), space or spacetime is in really a 
collection of 3D or 4D *cells *(tetrahedra or pentahedra) that are "glued" 
together somehow.

There is no "space"  in the conventional Euclidean of Riemannian  
geometrical/metrical sense, so these cells aren't *in* space (there is no 
space inside of them or between them). The cells collectively *are* space.

- pt

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