Post #2 Week #3 The Books "Cycle"

I have recently finished reading the book. Towards the end I noticed Billy connecting and adding in objects from the beginning of the book. At the very end of the book Billy was in NYC at an adult book store and he was showed a picture. "It was a photograph of a woman and a Shetland pony. They were attempting sexual intercourse between two Doric columns, in front of velvet draperies which were fringed with deedlee-balls" (Vonnegut, 205). This picture was the same one that Weary had at the very beginning of the book. But this wasn't the only thing. Multiple times at the end of the book Billy said, "'If you're ever in Cody, Wyoming,' he told himself, 'just ask for Wild Bob'" (Vonnegut, 206). And I remember this from the beginning of the book too when Billy was in the war. I was wondering why Vonnegut would add little things from the beginning of the book into the end of the book?