本文从控制论的角度重新审视动态语言知识更新问题。主要的视点有 :5.关于“种族信息量的测定” ;6 .关于“本书的教训之一”和“反内稳定的因素” ;7.关于“学习”和“自生殖机” ;8.关于“白箱”和“黑箱” ;9.关于“可信的程度只能到达头几位数字” This article re-examines the problem of dynamic language knowledge updating from the perspective of cybernetics. The main points of view are: 5. “On the measurement of the amount of race information”; 6. On “one of the lessons of the book” and “anti-internal stability factors”; 7. On “learning” and “self-reproductive machinery”; 8 About “White Boxes” and “Black Boxes”; 9. About “The Credibility Can Only Reach the First Several Numbers”