a well run slaughterhouse is very impressive from a work-flow product utility perspective. almost nothing is wasted.
i worked on a project in college where i got to go to the kill floor and freezer for about 150 steers from different breeds 3 years in a row tracking carcass quality.
it's like any field, a lot of skill is required to keep things moving, minimize loss.
people underestimate the value of production line logic.
it has allowed us to eat cheaper, employ lower skilled people, increase predictability of the end product, minimize waste, minimize hazard to the employee, increase convenience.
i wish they could figure out a way to use spinach in hamburgers that wouldn't generate E. coli recalls. maybe they already do but research shows people don't want spinach.