You can't. The observation method of undergraduate graduation thesis refers to a method that researchers use their own senses and auxiliary tools to directly observe the research object according to a certain research purpose, research outline or observation table, so as to obtain information, which cannot be memory. Graduation thesis, as a course, is the last link in the professional education of ordinary secondary specialized schools, junior colleges, undergraduate colleges, higher education self-study exams and graduate students. In order to concentrate on scientific research training for students of this major, students are required to summarize their independent assignments and write papers before graduation.