Every wise investor (well, maybe not Warren Buffet) puts some money into fixed income, most people roughly 50/50, so if savings accounts are paying 8% you can bet the ratio is going to rise dramatically. If Savings Accounts are paying 8% mortgages are going to be costing us 10%, and bang there goes inflation into the stratosphere.
You also need to study Economics 101, JLM. High interest rates are not inflationary, they are deflationary. High interest rates means all kind of loans become very expensive.
Mortgages become expensive, so people don’t but houses. Business loans become expensive, so businesses don’t expand and new businesses don’t start. The result is recession and unemployment. Business activity slows right down.
Interest rates are kept high only when inflation is running rampant. They are kept high until there is high inflation. As soon as inflation abates, interest rates are lowered. High interest rates are very harmful to the economy (and it doesn’t do Wall Street or Bay Street any good either).