In which Tyl Von sig’Alda makes an approach.
sig’Alda is demonstrating a very closed-minded attitude here: instead of paying attention to new information and adjusting his theories and plans, he’s holding on to his theories and plans and taking in only what information fits what he already believes he knows. Some of it’s definitely indoctrination, like the way he shies away from the possibility that Val Con might be consciously and happily free of the Department’s influence, and some of it is… probably at least partly due to indoctrination, like the way he dismisses everything any Terran does as an irrelevant distraction. But I’m not sure that explains the way he seems to have accepted certain things as facts when they were only ever presented as plausible theories, like Miri’s supposed drug addiction.
One way and another, his inability or disinclination to accept new information is going to come back and bite him sooner or later, when reality fails to match the contents of his head. The question is how much damage he’s going to do before then, trying to impose the contents of his head on reality.