Pat Hayes wrote:
> Well, let us just push on that for a moment. Economists and the entire
> financial industry do seem to assume that there is something
> underlying all fungible forms of exchange (that is, dollars and euros
> but not 6 inch wire nails), something that they all measure and allows
> them to be compared; and the notions of unit and scale seem to apply
> here quite well also.
For the record, in UnitsML we've decided to not mess with Currency. If you
want to try, sure, but be sure to model supply, demand, chaos, panic, war etc.
in the ontology as all of this will have an influence in your "what is valid",
"what belongs to which quantity", "are these interchangable" etc. etc.
questions. The majority of units and quantities nowadays have the beautiful
property to be static, while the majority of currencies nowadays have the
beautiful property of being wildly dynamic. If you seriously want to go ahead
and try and include currencies, my personal ETA-guess for an uom-ontology just
went over to 2011+. Enjoy. (01)
-Martin (02)
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