premise: I was a little shocked to find out that he had died . So I sat down and we talked and eventually he produced two knives - one was dull but looked dangerous , the other was so sharp it could decapitate a human being with very little effort and yet it looked like an ordinary butter knife . He said these things were clues to his death , but he could n't figure them out . I was trying to help him when a couple of jerks come in and steal the butter knife . What is probably true ?
hypothesis: ` The narrator is talking to a ghost