You started generalizing beyond coffee with your "Functional or "to one" relationships are pretty well understood today, no need to imbue them with mystical powers of action, or connotations of "belonging to" or "contained within"" and such, and so the general definitions of functions are now in play.
And this includes not in terms just of what sets are and are not in play but of how formulas are related to the use of the term "function". Some uses of the term refer to the formulas that determine the set of outputs, and even refer to the output itself as in "y is a function of x" and so on.
On Wed, Oct 17, 2012 at 1:45 PM, Joe Niederberger <firstname.lastname@example.org> wrote: > What's all that got to do with the price of coffee Paul? > Coffee.price? > > Does coffee in fact have one price or maybe more than one? > It depends on the context. But we don't really need to talk > about bananas if we don't care to. > > Joe N