Growing up, we all know that 60 points is the passing line, 100 seems to be more difficult, and 90 points is a score that we can be proud of. The same is true at work. Many people think that "doing 60% of the work is too dangerous and the company will fire you;" It is too hard and unrealistic to achieve 100%; It's good to do 90% of your work. "This statement seems reasonable, but the process of work is composed of a series of subtle links, each of which is based on the previous link, and the interaction between links is based on multiplication, not simple percentage superposition. After a series of interlocking processes, the final result of "very good" 90 points may be 59 points-failing, which is the process control effect.

An intensive modern business process needs to go through many links such as conception, planning, design, discussion, modification, implementation, feedback and correction. If you can't take every link seriously, give feedback and correction to every link in time, don't make every link perfect, but take it for granted that "the result will not be too big", then the final outcome may be that you have achieved 90% in this link and 90% in the next link. After five links, your job performance is not 90% on average, but 59%-one will be eliminated by the fierce competition environment. In some cases, it may be lower than this score or even become negative! At this time, if we "overhaul" according to the standard of 100%, it may mean that the whole project and the whole project need to be "reinvented", which means that time and resources are wasted, efficiency is low, and opportunities are missed, which means that previous efforts are in vain. 90%×90%×90%×90%×90%=59%。 The significance of this simple equation beyond mathematics is that the implementation process cannot be discounted!