In an era where text has always been the main medium, people mainly communicate ideas and disseminate information through books. In the reading of books, we have entered a long tradition of writing in words. On the contrary, television is now centered on the current, and the more information it disseminates, the more it has. Presentity seems to be more valuable. Text is an abstract symbol. As a medium, it requires reading and thinking. TV also directly affects viewers with images. Sometimes it is even taboo to think because thinking hinders viewing. This passage mainly states:. ['Changes in the information media will lead to changes in the way the world is known.', 'Similarities and Differences between Books and TV.', "Disseminating information through television reduces people's thinking time.", 'Long tradition, history must be spread through books, not television.']