Xerox say the fault was down to cheap paper. Photo: Eddie Jim 

New York.  Engineers at Xerox have made a bold claim for their skills at unclogging printer jams: their expertise was responsible for a drop in Chicago's crime rate during the mid-Nineties.
The story of how they unclogged a city's broken criminal justice system is told in the latest edition of The New Yorker, and a spokesman for the copier company said it was not just a throwaway line but that the engineers stood by their extraordinary claim.

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