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The mathematicians that found a new method to make money while gambling have gone to become great investors on their own right.
Investment is one of the best ways to save money and make profit without working or you could say using money to make money, that way every rich person or person with large assets will multiply their wealth in an investment.
They use this method to be able to make certain amount of money more definitely and consistently so maybe they just use gambling as place to have fun, after all I sure they already get lot of sweetness from gambling.
This is the case as well of Edward Thorp, which is the creator of card counting, however he probably earned more money with the book he wrote than by using his card counting method, and eventually he became a hedge fund manager and earned a fortune on the markets with a new method that he designed himself as well.
Yes, Edward Thorp is mathematics professor and he is also a hedge fund manager and Blackjack researcher.
He has quite large fortune and of course his experience in gambling is beyond doubt, especially in all types of card games, he can make more wins than his ability but after all his achievements it seems he will not do it again.
Edward Thorp is known as mathematics professor who produced many formulas and methods for calculating cards and also using correlations to get decent financial profits.