On The Gist, Devin Leonard returns with the last installment of our postcard series to discuss the evolving economics of the U.S. Postal Service. Leonard's book is Neither Snow nor Rain: A History of the United States Postal Service. Plus, Bruce Shapiro ponders the best way to cover mass shootings if the goal is to limit future massacres. Shapiro is executive director of the Dart Center for Journalism and Trauma at Columbia Journalism School.

For the first-ever, midshow Spiel: Twinkies. For the traditional closing Spiel: dying in vain.

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