No example of a barter economy, pure and simple, has ever been described, let alone the emergence from it of money; all available ethnography suggests that there never has been such a thing Caroline Humphrey, Barter and Economic Disintegration (1985)

Monetary aggregates

Τι περιγράφουν οι δείκτες Μi και, κυρίως, με πόση ακρίβεια;