Andy,

All randomness in nature is ultimately based in the fact that  
everything is quantum probabilistic at base. If the quantum world  
were not probabilistic there would be no true randomness, though  
there would continue to be many cases where the determinism was not  
computable.

However even the quantum world is not truly random, but random only  
in ways which converge towards determinism at the classical level,  
e.g. half lives are predictable even though individual decay events  
are not.

So the upshot is that individual quantum events ensure that events in  
the universe are not completely determined, but that that non- 
determinism often tends to converge on outcomes which may well appear  
deterministic at the classical level, perhaps bounded randomness, or  
quasi-determinism would be appropriate terminology.

This all goes back to my point of which way determinism actually  
works, backward or forward, bottom up or top down. Do the  
convergences determine the constraints on the quantum world, or do  
the constraints on the quantum world determine the convergences at  
the classical level. Are the laws of complex emergent events actually  
determining the fundamental tuning of the quantum world which seem to  
produce them, or vice versa? Or is it all locked in an unchangeable  
time symmetric network?

Edgar


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