Elf: I don't understand. Why can't you just figure out where I'm broken and grow me some new bits.
Doctor Bunnigus: Because what's broken is in your brain. Your stimmie abuse re-wired the pleasure center, all kinds of event filters, and even some of your memories.
Elf: So why don't you just grow me a new pleasure center and new filter thingies?
Doctor Bunnigus: Because I don't like vegetables.
Elf: I don't see. . . Oh.