The world is very much like a large PB&J filled with many different ingredients can vary.
Explanation:
He can be expressing that this world.has many backgrounds, many problems as well, and is somehow all connected being that there is only one world therefore all our problems as well as beauty in this world is combined into one sandwich with a bunch of different things happening good and bad, new and old.
Answer: By keeping facts like his name and the crime unknown to the reader, the reader can better visualize themselves in the position of the narrator, leading to more fear.
