The joke of postdoctoral and migrant workers, why do everyone support migrant workers?

Unilever introduced a soap packaging production line and found that this production line has a defect: there are often boxes without soap.

You can't sell empty boxes to customers. They had to hire a postdoctoral fellow who studied automation to design a scheme to classify empty soap boxes.

Postdoctoral researchers set up a research team of more than a dozen people, and comprehensively adopted technologies such as machinery, microelectronics, automation and X-ray detection, which cost hundreds of thousands and successfully solved the problem. Whenever an empty soap box passes through the production line, detectors on both sides will detect it and drive a manipulator to push the empty soap box away.

A township enterprise in the south also bought the same production line. When the boss found this problem, he was furious and found a coolie and said, "Get this done for me, or leave me." As a result, the coolie put a fan next to it and solved it.

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Let me add a sequel to this story:

Later, another problem was found in the soap production line. Some soaps are incomplete and incomplete. What should I do? Postdoctoral students can immediately detect incomplete soap by slightly modifying the detector, and the problem will be solved. Fans in the southern town of China have no choice but to test it manually.

Later, the detector was improved and extended to other industries to solve various problems. For example, a product needs five screws, and workers often miss one and forget it. This detector can be detected after improvement and driven by a manipulator. . .

It's like making software. If you have a good architecture and it is easy to expand, then the upfront investment is worthwhile. Did you think about this question when you laughed at the postdoctoral fellow?