As a teenager in the 1970s, I worked on a typical dairy farm in England. Fifty cows grazed on lush pastures for most of their long lives, each producing about 12 litres of milk daily. They were loved and cared for by two herdsmen.
About 50 years later, I visited a dairy farm in China. There, 30,000 cows lived indoors. Most of these selectively bred animals wore out after two or three years of producing 30–40 litres of milk every day, after which they were unceremoniously killed. The workers rarely had contact with the cows. Instead, they sat in offices, programming machines which managed them.
