Originally Posted by
Bleve
Unfortunately you can’t make that assumption - humans sometimes don’t act reasonably. In the recent Malaysian Airlines incident at Brisbane (pitot covers left on), both pilots observed red speed flags on their PFDs during the takeoff roll (didn’t say or do anything), the CPT (PM) called the 100 knot airspeed check based upon ground speed and they got airborne with no valid airspeed indications.
Indeed you can't and you mustn't, especially in the right seat; see
https://en.wikipedia.org/wiki/Birgenair_Flight_301
One of the driving forces for the creation of CRM and the timely destruction of the fallacy that the "Skipper's always right. Period." mentality.