I liked the thinking scene, and/but also I found Harry's methodical commitments quite alien to my own thoughts.

Trying to reconcile the description Harry gives of his intended style of thinking while in a time-pinch with the actual verbal performance we see of his train of thought, I'd describe Harry's (time-constrained heuristic?) thinking like this: He allows himself to notice some confusions (about his environment), but he also sets out intending to avoid expressing or considering other confusions (doubts and second guesses about his own conclusions or about the process of his reasoning). He allows himself to pose questions to himself (to determine what evidence he has, or to prioritize finding an explanation for an event which is simply consistent the prior train of his reasoning), but he doesn't allow himself to pose some other questions to himself (no "self"-question, i.e. "self reflective question about his reasoning or conclusions""). But then he does suppress a line of inquiry when he notices that it does not conform to his methodical commitment of sustaining and working within the constraints of his prior conclusions (going ahead with the hypothesis, no putting on of breaks). Thus he allows himself to respond to doubts about the expedient efficiency of some trains of thought (by suppressing them) when those trains of thought are themselves serving to doubt his object-level conclusions or the process of his reasoning.

Maybe. All feels like a moderately badly-fitting description of Harry's reasoning, too strongly informed/framed by his statement of methodical intent. The more striking feature of Harry's reasoning, and the feature that I am more inclined to take as conveyed productive advice about practical reasoning from Eliezer, is the way that each time that Harry consciously notices he is confused or doubting his own reasoning, he then instructs himself to "turn it around", whee "it" referring not to the note of confusion but to his reasoning, as it proceeds in a directed manner toward answering intended queries. That is a much appreciated aspect of Harry's reasoning, which I am glad to have seen depicted and verbally recognized by Harry, to the benefit of the reader.