Arnold did not think much of the answer, unless the small revelation that Aileen was more comfortable with the known than unknown was of any value. Given that most were, it was not. It simply inferred that Heinz had not abused her in some way.
"I came out of curiosity," Culler answered, selecting the last option of her original question.
Certainly, there were many facets to his curiosity, but he was satisfied that his answer was as complete and informative as her own had been. Thus, the agreement was met in equal value.