Suppose you have the choice between a guaranteed $100 and a risky $200, and suppose you choose the $100. You’ll never know what would have happened if instead you had chosen to go for the risky $200. So you’ll have no reason to regret your decision to take the sure thing. In contrast, suppose you go for the risk. Now you can’t help but know what would have happened if you had taken the sure thing; that’s what makes it a sure thing. So if you opt for risk and you lose, not only do you wind up with nothing, but you also have to live with the sting that you could have had $100. Taking the sure
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