Money is a worthless fiction. Only about 4% of all available wealth worldwide is circulating as currency. The rest is just 0s & 1s in cyber space. Every time you borrow $10, the bank receives $100 in credit. They don't even have to have $.01 in their vaults anymore to backup their cash deposits.Maybe, back about 1981 when mortgage rates were at 21%, savings accounts were paying about 17% and we didn't go into any deep depression, But I still think the whole situation was stupid.
Anyway banks don't really set anything, beyond making the final button pushing moves. People have to start realizing that money is "live" and finds it's own levels.
You might want to download this free ebook to get the real picture on how banks actually operate: http://www.spiritualeconomicsnow.net/solutions/How_I_08.pdf