Computer major changed to machinery.

people who have worked in the machinery industry for 3 years tell you that the machinery industry is a deep pit, so don't come to seek development if you muddle along. From the second industrial revolution to the present, the machinery industry has been finalized for more than 1 years, and it is difficult to make a big breakthrough in recent ten years. At present, many machinery factories are half dead and alive, and their wages will not be high. The means of production in the machinery industry are mainly machinery, but people are not important. Resources are always in the hands of rich people, and the relationship is more important, followed by ability. It is difficult for ordinary people to develop, and they basically work in one position until retirement. The older the mechanical major is, the more popular it is. I can tell you for sure that this sentence is wrong. Most of the old people over 4 in the machinery industry earn a little more than new employees. Machinery is tired and dirty. Since it is good to work in other decent industries (such as teachers, civil servants, sales, etc.) in order to muddle along, why come to machinery?