If we are going down the organ analogy road, imagine a world in which organ transplants are easy enough that there are plenty of third parties that will perform

If we are going down the organ analogy road, imagine a world in which organ transplants are easy enough that there are plenty of third parties that will perform organ transplants without limiting themselves to using organs obtained through legitimate channels. If you want to know how that could turn out badly, read Larry Niven's stories set in the first century of his "Known Space" universe [1]. In particular the stories collected in this [2], but everything in Known Space written through 1980 is great if you like hard science fiction. (I don't know about the Known Space stuff written later, because by then I was out of school and didn't have much time for fiction). [1] https://en.wikipedia.org/wiki/Known_Space https://en.wikipedia.org/wiki/Known_Space [2] https://en.wikipedia.org/wiki/Flatlander_(short_story_collection) https://en.wikipedia.org/wiki/Flatlander_(short_story_collec...