Luther Blissett writes "There's a history of pranks and hacks in the year-end issue of the Economist, including MIT hacks, the Bonsai Kitten, and the Pentagon hack by my favorite, Abbie Hoffman." From the article: "At Harvard's neighbour, the Massachusetts Institute of Technology, 'hacks', as the MIT crowd calls them, are more serious. So serious, in fact, that in 2003 the institute's best hacks were assembled in a 178-page book, 'Nightwork'. The pranks at MIT tend to be feats of engineering. They are positively encouraged, because they teach students to work in teams, solve complex problems and, sometimes, get a message across. Mr Peterson's book includes an 11-point code for pranksters: leave no damage, do not steal, do not drop things off a building without a ground crew, and so on. In Cambridge, Massachusetts, at least, student pranks have become an establishment activity."