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“Superinvestor” Warren E. Buffett, who got an A+ from Ben Graham at Columbia in 1951, never stopped making the grade. He made his fortune using the principles of Graham and Dodd's Security Analysis. Here, in celebration of the 50th anniversary of that classic text, he tracks the records of investors who stick to the “value approach” and have gotten rich going by the book.

As participants in incentive systems perceive that they are getting closer to their goal, they intensify their efforts.

Picking a sure small reward versus a risky big one depends on the effort it requires and how much you enjoy it.