In the 2012 edition of Occupy Money released last week, Professor Margrit Kennedy writes that a stunning 35% to 40% of everything we buy goes to interest. This interest goes to bankers, financiers, and bondholders, who take a 35% to 40% cut of our GDP. That helps explain how wealth is systematically transferred from Main Street to Wall Street. The rich get progressively richer at the expense of the poor, not just because of “Wall Street greed” but because of the inexorable mathematics of our private banking system.