To better understand economic exchanges, we must consider exchanged items other than monetary quantities. Classifying these exchanged items generically as "commodities" provides a more accurate framework for economic exchanges, so long as two conditions are fulfilled:
Acknowledging the need for a ontology of commodities—tradable goods and services—is an indispensable prerequisite. A theory of price formation that ignores this foundation is inherently flawed and inevitably leads to inadequate economic policies.