Now, that's pertinent to the subject of this thread. I'm sure the probes were frozen solid LONG BEFORE the TO roll started.
I’m relieved that you approve of my comment as being “pertinent.” Of course, I’m sure you’ve ensured that no one else here has deviated from that norm. I would, however, offer a small disagreement with your presumption that the “probes were frozen solid…” It was my impression that if the PT2 probes were “frozen solid” there would be no pressure sensed at their location and any differential pressure between the PT2 and the PT7 probes would have been sensed as an “off-scale” differential pressure reading. Had this been the case, any throttle movement would have been seen as a max-scale deflection of the EPR gauge and would have been noticed. That there was an EPR reading just different enough to be somewhat questionable indicates that the mixture in the PT2 probes was only partially frozen, likely due to the 160-degree water mixed with the 3% glycol used to “de-ice” the airplane.
…the human body is better adapted to being "in the loop", with systems providing external monitoring, rather than the other way around.
While pilots are expected to be “in-the-loop,” having additional systems provide even more information presentations in the cockpit is not necessarily useful, unless that information is accurate, unambiguous, and immediately useful to the “in-the-loop” pilot who has to make reactive decisions – there just isn’t the time to logically analyze yet more numbers in relation to even more numbers.