"The customer is always right" is a motto we hear often and it suggests that consumers only have rights and businesses only have obligations. That is wrong. Dennis Prager explains that customers, too, have obligations, and should never take up a salesperson's time to inquire about an item they know they'll purchase elsewhere. In 5 minutes, learn how to shop ethically. https://www.youtube.com/watch?v=AEMd6NDT5Z8 去实体书店选书，然後去网路书店下单，其实有点不太对。 -- 台湾最大慈善团体的惊人黑幕！https://www.youtube.com/watch?v=2ooh68NL74o --

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