ou need 15-20x your salary to retire. Savings alone would take 150 years to get there — here's how compound interest actually closes the gap.

A Kirkus reviewer once called my book simplistic. I've decided to wear that as a badge of honor. Let me tell you why. Stolen from Fighter Jets The U.S. Navy has a design principle called KISS — Keep It Simple, Stupid. It wasn't born from a love of simplicity for its own sake. It came from a harder problem: how do you build a fighter jet that can be repaired by a mechanic on an aircraft carrier in the middle of the ocean, with limited tools and no time to consult an engineer?