Chris Scott: "If I may be permitted a brief aside, however, the case of MH370 has resulted in a rather unusual situation in respect of conspiracy theory."
Yes, but that has been driven by revelations as the investigation progressed. Initially, there was a massive search where MH370 disappeared from radar. Very reasonable. Then it was revealed that actually primary radar showed a turn back. People theorized a fire or other emergency and an attempt to land at the nearest airport. Very reasonable. Then we find out that MH370 made a series of left and right turns toward waypoints, and continued flying for many hours heading south toward the middle of nowhere, with communications disabled.
I don't believe it was a conspiracy, as all that only requires one person, albeit one who knows a great deal about flying a B-777. What was accomplished was an aviation mystery to rival the disappearance of Amelia Earhardt. Khufu had the Great Pyramid, this is the aviation equivalent.