Yes many of the experts and detectives here on getbig think it's all a conspiracy and the plane has landed somewhere.
I don't know, and of course those were theories...but, the prime ministers is certain that it landed in the Indian Ocean off of Perth....
But, you have no plane, no bodies, no black box---but you know for certain? If someone is certain then they better produce some evidence of said "certainty".
Co-Worker: "Hey Bob, you're going to get fired today!"
Bob: "Wha...how do you know?"
Co-Worker: "Uh, I don't know, but I am certain that you are going to get fired today."
Bob: "So you are certain? How do you know?"
Co-Worker: "Uh, yeah...fairly certain, I overheard someone from HR saying someone from our office was going to get fired, so I thought of the one who most likely would get fired is you."