I agree with most of what you said, but you are still looking at it as an IP and I as a fairly recent primary student.
Obsessing is one thing, and I think we can all agree on not doing that (especially in Primary). But often studs are brow-beaten by IP’s or other studs for just trying to figure out how the system even works. . .like in many of the above posts. I don’t doubt that it gets real old real quick as the IP explaining the same things over and over about the grading system…or on how to fly form, for that matter

Maybe there should be a 15 minute lecture on NSS when the studs pick-up? Lord knows we got lectured on everything else. And that would be a lecture people actually WANT to learn from.
A question for you, though, if I may: Do most of the Primary IP’s have a good understanding of the NSS system, or is it sort of gouge-based like for the students?
(I ask because in Advanced, many IP’s don’t have a real good lock on how the NSS is affected. I have heard some incorrect gouge from IP’s about how the NSS is affected by grades here, and there is a LOT more gray area here than in MPTS to help or hurt the stud.)
The getting to MIF faster thing was something I learned from my prying into the NSS system gouge. That was always my goal for that reason. I didn’t aim for the 5, I just wanted to be at or over MIF ASAP on all items possible. So maybe if people knew more about the system they might have the same attitude. And then you wouldn’t have to think about bailing out while your stud is giving you seventy 15 minute reports (for the 5, you know), then almost killing you in the pattern on every T+G….haha. OK, that might be a little optimistic.
And I know you were playing devils advocate a little with the scenario involving the AC compressor, so I will too—just for funzies. In that situation you decided to land, not knowing the problem for sure. If you had similar symptoms, you would probably take the same actions again…so knowing what the problem might or might not be might not change what you do. You would have more knowledge, but not really any more recourse, no? Kind of like a stud might or might not pick a particular instructor to go on the road with if he knows how the system works and what he needs…
But I think we can both agree we see each other’s point there.