I use plant as a term of the art. Calling a group just plumbers is to me condescending: it's a trade that requires creative thinking, knowledge, experience, an

I use plant as a term of the art. Calling a group just plumbers is to me condescending: it's a trade that requires creative thinking, knowledge, experience, and a willingness to (literally) deal with other people's sewage. Plumbers are the real MVP. But the same is fairly said for other professions and trades (excepting that, one hopes, the sewage is figurative). There is a difference between those who are self-taught or taught on the job versus those educated in academia, and there are many situations when it's useful or important to be able to distinguish between the two groups. The difference in training doesn't speak to the quality of work, but it does speak to expected capabilities.