宋健在《百年接力留学潮》一文中写道:中国改革开放所取得的成就毫无保留地证明了系统学中一个普适定律:只有在一个对外开放的系统中,通过与外界交换物质、能量、信息、人才,才能聚集和增大有效的发展动力,获取有用的信息,才能使系统迅速、稳健地发展成长。相反,在一个封闭的系统中无序性只能不断增长。 Song Jian wrote in his article entitled “Hundred Years of Succession to Study in China”: China's achievements in reform and opening up have proved without reservation a universal law in systems science that only by exchanging material and energy with the outside world , Information, talent, ability to gather and increase effective driving force for development, access to useful information in order to make the system rapid and steady development and growth. On the contrary, in a closed system disorder can only continue to grow.