The postal industry, for example, could learn a lesson from airlines, train companies, travel agencies, and hotels, all of which increase their prices during periods of high demand. The assumption that the price of mailing a letter or shipping a package should remain constant throughout the year is ripe to be challenged.
电视行业没有质疑并改写传统模式、方法和经营手段，但它们绝不是孤立。比如，邮政业可以从航空、铁路、旅行社和饭店等行业中汲取教训，后四者都会在高需求阶段涨价。认为寄信或邮递包裹应该全年一个价的观点应该遭到挑战。