it begs the question, the reprogramming of the computer, does it mean foul play in the cockpit? >> well, not necessarily. if there's a developing problem on board or a medical issue of a passenger being ill, which is less likely in this scenario, if there is liking of that, that the pilots may preprogram the flight system, fms as it's known for diversion, in this case, back to kuala lumpur. but it could also mean something less sensible. and would fit in with those who believe this aircraft might have been taken by force or hijacked in some way or diverted deliberate by by the pilots themselves. >> it's hard to come up with a reason why, if there was a technical issue, they would program it, and then 12 minutes later say "all right. good night" to air traffic control. that seems to be one of the things that's hard to reconcile here alastair.