SBC News Can prediction markets help find a missing plane?

Can prediction markets help find a missing plane?

SBC News Can prediction markets help find a missing plane?Professor Leighton Vaughan Williams, Director of the Betting Research Unit of the Nottingham Business School at Nottingham Trent University, contemplates whether simply studying probabilities can increase the chance of finding something important.

I was once told a story about the value of crowd wisdom in turning up buried treasure. The story was that by asking a host of people, each with a little knowledge of ships, sailing and the sea, where a vessel is likely to have sunk in years gone by, it is possible with astonishing accuracy to pinpoint the wreck and the bounty within.

Individually, each of those contributing a guess as to the location is limited to their special knowledge, whether of winds or tides or surf or sailors, but the idea is that together their combined wisdom (arrived at by averaging their guesses) could pinpoint the treasure more accurately than a range of other predictive tools.

At least that’s the way it was told to me by an economist who was in turn told the story by a physicist friend. To any advocate of the power of prediction markets, this certainly sounds plausible, so I decided to investigate further.

Soon I was getting acquainted with the fascinating tale of the submarine USS Scorpion, as related by Mark Rubinstein, Professor of Applied Investment Analysis at the University of California at Berkeley. In a fascinating paper titled, ‘Rational Markets? Yes or No? The Affirmative Case’, he tells of a story related in a book called ‘Blind Man’s Bluff: The Untold Story of American Submarine Espionage’ by Sherry Sontag and Christopher Drew.

The book tells how on the afternoon of May 27, 1968, the submarine USS Scorpion was declared missing with all 99 men aboard. It was known that she must be lost at some point below the surface of the Atlantic Ocean within a circle 20 miles wide. This information was of some help, of course, but not enough to determine even five months later where she could actually be found. The Navy had all but given up hope of finding the submarine when John Craven, who was their top deep-water scientist, came up with a plan which pre-dated the explosion of interest in prediction markets by decades. He simply turned to a group of submarine and salvage experts and asked them to bet on the probabilities of what could have happened.

Taking an average of their responses, he was able to identify the location of the missing vessel to within a furlong (220 yards) of its actual location. The sub was found. Sontag and Drew also relate the story of how the Navy located a live hydrogen bomb lost by the Air Force.

Now this story has got me thinking. Let’s just say we are looking for a missing aircraft. Could prediction markets possibly help? It’s a question I’m currently asking myself. Maybe others should be as well!

 

This piece was originally published on the professor’s blog at leightonvw.com

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