For instance, American can charge high fares for flights to London but can only make money off the flight if it can fill it with enough passengers.

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Rather than argue directly with the entire table, I said that I planned to make a lot of money off of gay marriage.

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With that extra money they could, for example, pay off their mortgage, make some home improvements, or buy some big-ticket items, such as a new car or recreational vehicle.

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But recent experience with underperforming endowment polices has shown that investment products do not always make enough money to pay off the underlying debt.

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