Why did he skip class? First of all, his class is very vivid. I remember he taught us an introduction to sociology in the first half of my freshman year. I knew nothing about sociology at that time. It was he who made me understand that sociology was "useless, but very useful". When he talks about key concepts, he will disassemble the definition and divide it into small points, which is easy to understand. And he will use some vivid facts as his own examples.
Secondly, his classes are well organized. Different from other teachers, tian teacher didn't read the courseware very much, but arranged the knowledge points with some organized things, which made us have a clearer understanding of the whole knowledge system. After each chapter is finished, the main points of this chapter will be sorted out for review. There are also some review questions.
Finally, his class sounds relaxed, not as brain-consuming as other classes. Liberal arts courses are different from science courses. Liberal arts courses are more about listening and recording. In tian teacher's class, you will hear many interesting examples, which will make you happy and make you think about the truth. It's really "why not".