Warp <war### [at] tagpovrayorg> wrote in news:3d1781b9@news.povray.org:

>   I don't understand what's the point in doing this when you can just
> move one of the coincident surfaces a tiny bit in the desired direction.

becuase :
1. this is imho quite primitve work around, using something like y*1.0001 
2. in complex scenes, like group of i.e. 10000 spheres - this is hard to 
tell with spheres wil produce such problems, and it's hard to adjust "a 
little bit" such elements, if we have 1000 spheres like 
<0.12312,0.3424,0.1234> - how much should we adjust them to be shure not to 
have this problem ?

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