Situational Irony- Chapter 5

In chapter 5, the irony comes when Billy Pilgrim is treated to a play, Cinderella. During the play, Billy begins to laugh uncontrollably into what even turns into a shriek. From there, he was taken into a mental hospital where he met with Edgar Derby, who was described by Billy on page 92 as "doomed." This is where the situational irony comes into play. Derby kept comforting Billy, but Billy was struggling with it because he knew how Derby was going to die. Eventually, he would be lined up in front of a firing squad and shot to death. There was nothing that Billy could do to stop this though, so he decided to live with it. After all, he was convinced that there is no such thing as free will and no event in time can be stopped.