Ididn’t understand, though i wanted to. ask any survivor and you will hear the same thing: above all, we tried to understand. why all these deaths? what was the point of this death factory? how to account for the demented mind that devised this black hole of history called birkenau? perhaps there was nothing to understand. based on the excerpt, the author would most likely agree that?

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.

where exactly is the sentence

they insisted that there was not enough time to learn everything.  

explanation:

if they were going to steal the answers that is simply because they insisted that there was not enough time to learn everything.