Authorities report that there are yet-new prospects for finding the so-called "black box" or flight data recorder of Malaysia Flight 370 that mysteriously disappeared several weeks ago. Alongside this news are more suspicions of related terrorist activity. Both stories are related and they are both connected to how desperately important the flight data recorder is in this and every aviation tragedy of this size.
A routine Internet search will produce some interesting information about black boxes. They have come a long way from a foil-based system for recording the vital signs of an airplane to a more sophisticated unit:
While the concept of a black box is well known in public conversation, the law is not as commonly known. Interestingly, the law itself is the best explanation of why the black box important. This, in effect, is the information that is being sought after -- almost 100 bits of critical data: