Abstract
Among social sciences economics is probably one of the most quantity-minded disciplines. Since its birth the science has been developing the concepts and tools of analysis after a model of physical sciences. Economists are at bottom proud of the relatively high degree of quantification of their discipline. Such quantification is made possible by use of the price as a unit of the measurement of economic quantities. However, to what extent is the price useful as a unit of economic quantities? It is also an underlying method in economics to view economic quantity either in flow or stock. Can the price as a unit of the measurement be applied both to flow and stock without inviting contradictions? This paper attempts to answer some of these questions.
