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Imagine that a person commutes 50 mi to work and back 250 days per year for 35 y. During the commute, the person drives almost entirely on the freeway at an approximately constant speed of 65 mi/h. How much less time has this person's watch registered in 35 y than the watch of someone who has stayed at home? Is it true that commuters live significantly longer or does it just seem longer?

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