Tom Adams wrote:
>  
> We build abstract models and we can prove everything about the models
> using formal logic and mathematics.  But do the models correspond to
> reality?  Answering this question is harder, can't be solved with just
> logic and math.
> 
> This is a general problem, I am not sure why probability gets singled
> out so often for special mention.

It's because, in a nutshell, it is specifically through the mechanisms 
of probability that we connect these abstract models to practical 
decision making (at least in the standard utility-maximising "rational" 
paradigm).

James

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