By placing a hard cap on the total supply of bitcoins, as discussed in Chapter 8, Nakamoto was clearly unpersuaded by the arguments of the standard macroeconomics textbook and more influenced by the Austrian school, which argues that the quantity of money itself is irrelevant, that any supply of money is sufficient to run an economy of any size, because the currency units are infinitely divisible, and because it is only the purchasing power of money in terms of real goods and services that matters, and not its numerical quantity.