“知识老化”的问题以前就存在,但是,“老化”的速度,从来没有象现在这么快。以医学而言,盖伦的心血潮流说统治了上千年,直到十七世纪才为哈维的血液循环论所否定,而近代科学中概念的更新、深入与替代,却几乎象“走马灯”一 The problem of “knowledge aging” existed before, but the speed of “aging” was never as fast as it is now. In terms of medicine, Galen’s trend of thought has ruled for thousands of years. It was not until the seventeenth century that Harvey’s theory of blood circulation was negated. In modern science, the concept of renewal, in-depth and alternative concepts was almost like a “lighting lantern”. one