How much has the occupation of "I've only heard of it, but I've never seen it" disappeared after 90?

The occupations that I have heard of but most of them have never seen must include: paging girl, midwife, pig maker and open-air film projector. These may exist in the memory of the post-90s generation, but in fact they may never be seen, because some of these jobs are gradually disappearing with the development of the times. Although there may still be some occupations in the village, few people know about them. These people's unique skills are also dusty in the years.

The first one with the most sense of the times is Miss Paging. You may see it occasionally in the movie, but only once. This job has been completely replaced with the development of smart phones. In the 1980s and 1990s, people used mobile phones and pagers. At that time, mobile phones were really expensive. At that time, only rich people would buy it, but at that time, the telephone had to be answered by an operator. At that time, there was a very common line in Hong Kong films, "Call me if you have anything".

The midwife has never seen it. I feel that I have only seen it in TV dramas. I have this profession since ancient times. However, with the development of western medicine and its popularization in urban and rural areas, midwives can not solve the life safety of pregnant women to the greatest extent. People will choose to go to the hospital to deliver babies, and the professions of stable woman and midwife will gradually disappear. However, some remote areas may still exist, but only a few.

Pig farmers are the profession of castrating animals. In fact, many people simply don't know such a profession, let alone have seen it. My only memory is that when I was very young, I saw an old man castrating a rooster under a tree in the country and castrating the rooster with a special tool under the wings of the chicken. It is said that chickens raised in this way are more nutritious.