AstraMike writes, "The level of presumption here is really quite surprising." Well, that's the nature of investigation into mysteries, collecting data and trying to fit the bits of the jigsaw together, ideas followed by testing against reality.
You presume that Clark is an authority and hiding stuff, rather than accept what he says at face value.
“this aircraft was disabled in three primary systems. To be able to disable those requires a knowledge of the system which even our pilots don’t know how to do. Somebody got on board and knew exactly what they were up to.”
Well, we know it wasn't engine management, control surfaces or undercarriage he is talking about. I put Clark into the same category as many other highly paid executives.
I would suggest no Emirates pilots have disappeared with a B777, not because they can't, but because so far, none of them have wanted to. Professionalism, stability and a stake in the community.
We're not permitted to talk about the different cultures (including their religions), formerly called races, their attitude to life and other individuals ...