Does being a successful investor influence your retirement age? Find out about the advantages and disadvantages of early and late retirement. Learn about claiming Social Security and the connection between Social Security payments and Bituach Leumi (Israeli National Insurance) pensions. Is there a simple mathematical formula to guide you towards the right decision on when to retire or how to invest for success? Today Doug speaks with mathematician Professor John Allen Paulos of Temple University, author of A Mathematician Plays the Stock Market, about stock market strategies. Which formulas and strategies work, and which ones are just wishful thinking? Can using mathematical formulas help you become a successful investor? Follow John Allen Paulos on Twitter @JohnAllenPaulos and visit his website at: www.johnallenpaulos.com. Read his latest book, A Numerate Life.