The sociologists Frank Furedi and Ulrich Beck studied the development of commodified types of knowledge in the business culture of "risk prevention" in the management of money. The Post–World War II economic expansion (c. 1945–1973) created very much money (capital and savings), while the dominant bourgeois ideology of money favoured the risk-management philosophy of the managers of investment funds and financial assets. From such administration of investment money, manipulated to create new capital, arose the preoccupation with risk calculations, which subsequently was followed by the "economic science" of risk prevention management. In light of which, the commodification of money as "financial investment funds" allows an ordinary person to pose as a rich person, as an economic risk-taker able to risk losing money invested to the market. Hence, the fetishization of financial risk as "a sum of money" is a reification that distorts the social perception of the true nature of financial risk, as experienced by ordinary people. Moreover, the valuation of financial risk is susceptible to ideological bias; that contemporary fortunes are achieved from the insight of experts in financial management, who study the relationship between "known" and "unknown" economic factors, by which human fears about money can be manipulated and exploited.