====== Money Supply Issues ======

      * Monetary supply (physical) circulating in the economy versus money in a bank account (available for bank to loan out as well as for me to withdraw); interest bearing
    * Fractional reserve banking (ability to stretch / expand) as you don't need to supply money for all of whats on the books at one time. 
    * Wealth tied up in e.g. a house - represents wealth, can raise funds against that
      * Look up definitions for these
    * Liquidity
      * haircuts etc.
      * See e.g. Archegos Capital Management liquidity crisis
        * Relevance here is the money supply question - reduction in asset price -> margin call
        * Who has custody of the stock v who has title; price impact
    * In general - issues that may have some impact on the money supply