[Ivan follows along with the memory. It is a novel experience for him -- He is usually only able to delve into thoughts. But, he expects, that would be because no one has ever actively allowed him to view a memory as if recorded on one of those strange devices he had seen here. He is unsurprised when Morrison appears and keeps quiet as the interaction with the mysterious figure takes place. He is more concerned with the label on the gate . . . . . It began with a P or a B. And ended with a 4.

When the memory has concluded, he is silent for a few moments before withdrawing from Aethania's mind.]

. . . I can understand your apprehension, Councilor. And this . . . This was approximately the time when World P3/4 disappeared?