 One may view “finance” more generally (that is, the financial sector or system) as an extension of the monetary system. It is typically said that the financial sector has two main functions: (1) to maintain an effective payments system; and (2) to facilitate an efficient use of money. The latter function can be broken down further into two parts. First, to bring together those with excess money (savers, investors) and those without it (borrowers, enterprises), which is typically done through financial intermediation (the inner workings of banks) or financial markets (such as stock or bond markets). Second, to create opportunities for market participants to buy and sell money, which is typically done through the invention of financial products, or “assets”, with features distinguished by different levels of risk, return, and maturation.