Respuesta :
Answer: the rationale for the Holocaust will always be incomprehensible.
At the beginning of the excerpt, the author expresses that he is terribly confused by the rationale of Birkenau (a Nazi concentration camp during World War II). Moreover, he tells us that most survivors are equally confused. However, he concludes by saying "perhaps there was nothing to understand." This implies that the author believes that the rationale for the Holocaust will probably always be incomprehensible.