This book is based on the idea of the titular concept prevalent in Game theory, and the basic idea of two people recounting incidents, specially when they are lying. The storyline is excellently done, and the magic lies in its simplicity. This story is based on a concept that relies on the trust the reader places on the characters and the story they are narrating, and the way in which the characters in this book are sketched, you start connecting and empathizing with the situation they are in.