5. If a central bank needs cash, it increases interest rates to attract it (which is why Nigeria's MPR rates are high). Conversely, if a central bank can easily acquire cash, it lowers rates; why pay 4% when investors will accept 2%? This is why interest rates set by the Swiss Central Bank are low.
6For clarity, when volume shifts to bonds, bond yields decrease.
7What are the risks? It can erode unrealized wealth held in the stock market, create uncertainty, and negatively affect RSA and 401(k).