I'm just trying to make sense of these wildly varying altitude figures.
First they say the plane initially climbed to 40,000ft, or even 45,000ft. This is highly dangerous and it's extremely unlikely to be possible to get to 45000ft. But say it's possible to get up there and it causes hypoxia to all on board, save whoever is piloting who has a separate oxygen supply. The passengers would be dead within a short space of time.
Then the plane descends, erratically, to 5000ft, to fly low across the Malay peninsula. Eyewitness sightings of a low flying plane in the area of Kelantan seem to be gaining credence. Could whoever was piloting bail out at that altitude? How?
The plane then flies on on its preprogrammed route. No one left alive on board. So it doesn't matter when or where the plane comes down ( to the perpetrators.)
I'm quite aware that this will be considered a ridiculous theory. I'm just asking a lot of "what ifs", but it seems to be a completely audacious plan, that was doomed to failure but somehow, whoever has planed this has pulled it off. I suggest that some things that seemed highly unlikely or impossible a week ago have come to be and the easiest to believe, most palatable answers are slowly being ruled out.