Why say no evidence exists to indicate that the plane flew on, but then go on to say that the plane "may have flown on"?
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Agree, much of the truth is probably known. Here’s an article from a source recommended by one of the comments on the WSJ article that tells about passengers on the plane and why they were valuable to Chinese technology interests and other countries’ too. IOW, a hijacker wanted the talent. Possibly, possibly not. It would take a lot of organizing and personal information to coordinate stealing a planeload of valuable techies.