Hmm, I don't know how interesting this is, but here's a fact about airplanes:
The reason they don't make airplanes out of Black Box material is because it's so frickin' heavy, the plane won't be able to fly at all. Besides, just becaue the outer plane survives doesn't mean the people inside is safe too...
(you know, because some when people hear that a black box is recovered from a plane that got into accident and drown, they often ask "why don't all the plane made out of the same material to ensure its safety?)
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