In systems theory there is a principle called the Law of Requisite Variety which states in order to successfully adapt and survive a member of a system needs a certain minimum amount of flexibility.

• 在系统理论中，有一个原则叫做必须变化法则，指的是系统中的一个成员为了更好的适应和生存，必须保持最低限度的灵活性。