Rushing to work last week, John Doe, American, swung his car onto the freeway—only to discover that the posted speed limit had been reduced from 60 m.p.h. to 50 m.p.h. When he stopped at a gas station for a refill, he learned that overnight the price had gone up 2¢ per gal. At his office he felt unusually cool because the thermostats had been pushed down a couple of degrees, to a brisk 68º. Later, when he finished work and was driving home, he noticed...
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