What's the difference between computer painting and hand-drawn painting?

The advantage of computer drawing is that it is easy to modify, save and spread. The advantage of hand-drawing lies in the sense of material and handwork. Although there are computer devices such as handwriting boards and pens that are constantly improving to simulate the traditional hand-painted feel, it is simulation after all, and it is impossible to achieve the real traditional hand-painted feel. The feeling that the brush slides in contact with paper or cloth is beyond the computer's comprehension and realization. In terms of effect, the difference between the two is not obvious. Computer display color is based on the mixture of three primary colors, while hand-painted pigment is based on the mixture of three primary colors. There is still a difference in essence. At present, computer painting is still imitating traditional painting, just as photography just appeared to simulate the aesthetics of traditional painting. In the future, it is hard to say.