I have mentioned previously my concern at the apparent lack of procedure in the effective monitoring (and inter-crew communication) of primary flight information and which, on the surface, seems incongruous with the duty of professional piloting.
We should remind ourselves however that this tragedy possesses one feature which most others do not - a living crew.
If this crew now wish to serve the wider aviation community then their honest testimony about the events which transpired that evening should go a long way in dismissing much of the speculation and which testimony will hopefully result in the illumination of some specific failure in their cockpit procedure from which everyone may learn.
Rational thought assumes that some distraction must have occupied both pilots for sufficient time to accommodate the attrition of airspeed to the point where it became critical but, until the crew's testimony is made public, we are left guessing - and which absence of information is naturally frustrating.