The author describes theoretical basics on students' knowledge diffusion and its usage in their careers. The main questions is: Does and how academic knowledge change in current and future careers? The author recalls the most important assumptions about diffusion elaborated by sociologists and anthropologists. He draws a conclusion to own research. The paper consists of four parts. The first one conveys the thesis that academic knowledge transmission can be seen as diffusion. Then there is a debate on understanding diffusion in art. Further on, the author discusses the research, and finally he describes diffusion as a change.