> On Apr 6, 2016, at 10:22 PM, Fred Cisin <[email protected]> wrote:
> 
> ...
> Entropy: Could the rust on the cookie be de-oxidizing, and turning back into 
> non-oxidized ferrous compounds? 

No.  If that were true, iron ore would spontaneously turn into iron.  
Unfortunately, that does not happen.

        paul


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