A customer walked into our store looking for Christmas lights. I showed her our top brand, but—wanting to make sure each bulb worked—she asked me to take them out of the box and plug them in. I did, and each one lit up. "Great," she said. I carefully placed the string of lights back in the box. But as I handed them to her, she looked alarmed. "I don’t want this box," she said abruptly. "It’s been opened."

一位顾客进我们的商店买圣诞灯。我给她看了我们店里最好的牌子，但还需确认一下灯泡是否正常。她让我把灯泡从盒子里拿出来，然后通上电。我照做了。每一个灯泡都是正常的。她说:“非常好。”我小心翼翼地把这串圣诞灯放回盒子里。可当我把这一盒灯泡交给她时，她吃惊地看着我，突然说：“我不要这一盒，它打开过的。”