[anigbrowl]

Yes...that's why I described money as 'an abstraction.' My point is that the underlying resources on which money gives you an easy means of purchasing a claim (instead of having to barter) are sometimes perishable, which means that opting to store rather than use them can have a cost (separate of the opportunity cost of foregone alternatives) and inflation could be thought of as the incorporation of the aggregate perishability of goods into the abstraction of currency. I can't give you a citation for this, it's just my personal conjecture.