EditorialThe author and engineering processor Henry Petroski, on campus at Duke University in Durham, N.C., in April 2006. (Jenny Warburg/The New York Times)
EditorialThe author and engineering processor Henry Petroski, on campus at Duke University in Durham, N.C., in April 2006. (Jenny Warburg/The New York Times)
EditorialThe author and engineering processor Henry Petroski, on campus at Duke University in Durham, N.C., in April 2006. (Jenny Warburg/The New York Times)
EditorialThe author and engineering processor Henry Petroski, on campus at Duke University in Durham, N.C., in April 2006. (Jenny Warburg/The New York Times)
EditorialThe author and engineering processor Henry Petroski, on campus at Duke University in Durham, N.C., in April 2006. (Jenny Warburg/The New York Times)
EditorialThe author and engineering processor Henry Petroski, on campus at Duke University in Durham, N.C., in April 2006. (Jenny Warburg/The New York Times)
EditorialThe author and engineering processor Henry Petroski, on campus at Duke University in Durham, N.C., in April 2006. (Jenny Warburg/The New York Times)
EditorialThe author and engineering processor Henry Petroski, on campus at Duke University in Durham, N.C., in April 2006. (Jenny Warburg/The New York Times)
EditorialThe author and engineering processor Henry Petroski, on campus at Duke University in Durham, N.C., in April 2006. (Jenny Warburg/The New York Times)
EditorialThe author and engineering processor Henry Petroski, on campus at Duke University in Durham, N.C., in April 2006. (Jenny Warburg/The New York Times)
EditorialThe author and engineering processor Henry Petroski, on campus at Duke University in Durham, N.C., in April 2006. (Jenny Warburg/The New York Times)
EditorialThe author and engineering processor Henry Petroski, on campus at Duke University in Durham, N.C., in April 2006. (Jenny Warburg/The New York Times)
EditorialSeven Years War (1756-1763). Map of the Battle of Warburg (31 July 1760) between the Allied British and Hanoverian army, led by Field Marshal Prince Ferdinand of Brunswick-Wolfenb?ttel (1721-1792), and the French army, commanded by Lieutenant-General L...