On Thu, 9 Sep 2004, Lawrence Lile wrote:

> Note that in the 1D and 2D cases, objects can't slide past each other. 
> I would argue that in our universe, if it collides with another, objects 
> can no longer slide past each other either, in a higher dimensional 
> sense.  In other words, they go BANG against one another. Imagine two 
> stars that were suddenly in the same place at the same time...... I 
> would not like to be hanging around just then...

The 1d universes need not function as a normal 'dimension' as in z,y,z. 
This is a Gedankenexperiment. For example if you pick t for the 1d case 
the fact that objects cannot be slid past each other no longer bothers you 
because you know you can't do that in the real (perceived, measured) t 
axis. In a 2d universe objects can 'slide' past another but they could 
also be made of 'fog' and be able to slide though each other. This can 
also be pictured for the 1d case.

Peter
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