A commercial transaction can be viewed as a market atom. The particular features of a commercial transaction in a given sector (industry) bear an influence on the social and economic nature of the market exchange relationship. Despite their heterogeneity, the clustering of atoms within a market essentially remains a convenient fiction for analysis. In this respect, the myth of the invisible hand is the negation of trade as commerce. The central role of depersonalization and anonymity in normative visions of the market results in a sort of relational desert, the focus being on the commodity and its price, and consequently the sidelining of the commercial relationship and trade.