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At random: Insignia of the Navy's submarine service is a submarine flanked by two dolphins. Dolphins, or porpoises, the traditional attendants to Poseidon, Greek God of the Sea and patron deity of sailors, are symbolic of a calm sea, and are sometimes called the 'sailors' friend. In addition to the Dolphins, those World War II submariners who participated in successful combat patrols may wear the coveted Submarine Combat Insignia.
Oops!
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Ric
Posted 2019-03-09 3:10 PM (#93579)


Plankowner

Posts: 9151

Location: Upper lefthand corner of the map.
Subject: Oops!

Got this from LinkedIn

A beautiful contrarian truth - During WWII, the Navy tried to determine where they needed to armor their aircraft to ensure they came back home. They ran an analysis of where planes had been shot up, and came up with this.

Obviously the places that needed to be up-armored are the wingtips, the central body, and the elevators. That’s where the planes were all getting shot up.

Abraham Wald, a statistician, disagreed. He thought they should better armor the nose area, engines, and mid-body. Which was crazy, of course. That’s not where the planes were getting shot.

Except Mr. Wald realized what the others didn’t. The planes were getting shot there too, but they weren’t making it home. What the Navy thought it had done was analyze where aircraft were suffering the most damage. What they had actually done was analyze where aircraft could suffer the most damage without catastrophic failure. All of the places that weren’t hit? Those planes had been shot there and crashed. They weren’t looking at the whole sample set, only the survivors.






Thomas Courtien
Posted 2019-03-09 7:42 PM (#93586 - in reply to #93579)
Master and Commander

Posts: 1886

Location: Patterson, New York
Subject: RE: Oops!

Ric,

I like that story. Good example of mixing up cause and effect.
Sewer Pipe Snipe
Posted 2019-03-10 1:39 PM (#93595 - in reply to #93579)
Master and Commander

Posts: 1795

Location: Albany, GA.
Subject: RE: Oops!

It is all in the correct interpretation of the collected data!

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