Do you find a problem that people always find problems and try to solve them after the problems get bad .For example, a machine broke down and then the engineer fixed it .One person who contributed to human or one wonderful person’s work wasn’t known by a lot of people when the person lived. But after he or she died, the person or his work was famous immediately. When we read newspaper, we often see that how great when one person died. Why? It is Chinese words cannon after horse.
The key of the problem is people’s attitude.