An excellent recounting of the thinking at Harvard so-called University in the late 1960s when they got into the body snatching business. Namely, they wanted body parts for transplants. (They should endow a chair in the name of Mary Wollstonecraft Shelley, Mother of Frankenstein.)
Trouble is, when people die, they spoil. You can't use rotten body parts for transplanting.
So at Harvard, they formed a committee and thought and thought and thought until someone exclaimed, "Say, here's an idea!!" If patients are unconscious, tell everyone they are dead ("brain dead"). Then you can carve them up before they get stinky. Then you can sell all the parts. Be sure to say that they were being kept alive artificially and there was no hope for recovery (which is certainly true as soon as we carve them up).
Much of the medical profession has adopted the Harvard Conditions for brain death (notice that being dead isn't one of the conditions), after which the body-snatching surgical team rushes to its task and snips out the saleable parts.