A Mouse

One day, one of my company’s customers gave us a call for a trouble of using a new testing machine. With the call, the old women complained our machine could not be used anymore. Our sales man was very to listen her complaint and try to eliminate her problems by call. The old woman said that our machine did not work well and anything showed on the screen is unusual. She seriously told our sales man if we did not give her a elimination way, her company will return goods. The customer is very far from us, but my company finally sent an engineer to her. Our engineer checked all the details of machine, but found nothing abnormal. So the old women is requested to operate the machine. After booted, she started to say, see! Your machine is strange, the cursor can not click and the direction is also wrong. Our engineer told her that she didn’t use the mouse in right way, she use the mouse by the other way round……The old women also felt strange and asked our engineer, why? The mouse’s tail is back. Our engineer was speechless….