>> Given the choice between a slow program that gives me the right answer,
>> and some program that's much faster because it just spits gibberish at
>> you and doesn't bother checking whether it even remotely makes sense, I
>> know which one I'd choose. But maybe that's just me? :-P
> 
> does that mean you prefer an unbiased renderer to povray?

Can't say I've ever tried one. Might be interesting to do though...

Still, the primary difference is that biased renderers usually manage to 
produce reasonable approximations to unbiased ones. Inconsistent 
databases give you complete gibberish, not an "approximation" to the 
correct answer.

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