Why do people who are hardly engaged in photography think photography is very simple?

Some people say it's really not difficult. The basics have been learned in a year at most, and the rest is Pat. However, in fact, what you think of as "knowledge" is only the introduction of photographers, and the study of photography is completely an experience competition. For example, two photographers in a crew, a 40-year-old and a 25-year-old from the same professional college, have the same course knowledge and equipment, but the 40-year-old photographer is more stable than your 25-year-old hand, better at finding angles than your 25-year-old shoulder, better at using a camera stabilizer, more durable than your 25-year-old shoulder, faster at pushing the slide rail and able to cope with various equipment changes.