> > And how, exactly, is the marginal cost of info-production zero?  I can

I presume what Prof. Perelman meant was that once 
created, information can be used by additional 
persons or additional times without cost, unlike 
depreciable capital or 'exhaustible' consumption 
goods.   Conveying or preserving said information 
via the printed page or the byte is another 
matter and possibly not zero in cost.

You might be alluding to the point, with which I 
don't disagree, that the MC statement is trivial 
in light of the definition of information, sort 
of like saying a firm arse tends not to sag.

MBS

 
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