It's now been two weeks since the Australian PM announced that, based upon analysis of the satellite handshakes, that they were confident that Flight 370 went down in the Indian Ocean some 1500 miles off the western coast of Australia.
Since then a number of debris sighting turned out to be just discarded flotsam.
The latest leads are based upon a series of RF signals at 37.5 khz that may be from the planes data recorders. Or, they may not.
The radio pings have allowed the searchers to reduce the size of the search area but whether they're closing in on Flight 370 or something else is hard to say.
The fact of the matter is that with no debris there is no hard physical evidence that the plane is in fact anywhere near where they're searching.
Since I don't know the analysis they performed on the SATCOM communications, I don't know if this is an example of desperate people convincing each other that what they're doing is correct.
I don't know what the RF signals are although we do know with absolute certainty that 37.5 khz is the frequency that the block boxes on that particular Boeing 777 would use.
I'm tempted to predict the plane will never be found as that would probably guarantee they find it in the next day or two.