Here's why:
* Oxymoron: An oxymoron combines two contradictory terms for a striking effect. In this case, "slept but did not sleep" is the clear oxymoron. It highlights the paradoxical nature of the mechanical hound, which is programmed to function even while appearing inactive.
Additionally, the quote might also employ:
* Repetition: The repetition of "slept" emphasizes the contradiction and the hound's unusual state.
* Alliteration: The repetition of the "l" sound in "lived live" adds a rhythmic quality and further emphasizes the mechanical nature of the hound.
The quote creates an unsettling image of a seemingly dormant creature that is still active and dangerous, emphasizing the dystopian setting of the story.