“The scheme can not change fast” is planned opposite meaning, even if it is difficult to accurately plan was then to ensure that no unexpected, when plans will be disrupted, it has also become some of the people who do not want to plan an excuse.
“A year’s plan starts with spring. A day’s plan starts with morning.” People often would like to make some plans and preparations, even make an accurate calculation of each stage so as to make study and work systematic and orderly.
Your plan is a good person? If the plan was disrupted, how would you do it?