Would like to hear everyone's thoughts - certainly one of the more bizarre stories I've heard in a long time. Fwiw, I don't think there's much of a mystery. The South China Sea covers an area of one and a half million square miles. As a comparison, the whole of Western Europe is 380,000 square miles in size. Even a small search area will cover tens of thousands of square miles of sea. Modern aircraft contain a lot of composite materials. Such materials are likely to break into many small pieces if they impact a solid object (the sea) at high speed. The pieces may only be a few feet across or even smaller and this essentially makes the task of searching for the remains of the aircraft much harder. Also, depending on where it came down, floating debris may be being carried away from the point of impact by ocean currents. A lot can go wrong on a plane and, whilst flying is proportionally a safe means of transport, equipment can malfunction or break and cause an aircraft to suddenly crash.