Roger Ebert wrote in his four-star review of the 1983 film WarGames, “Computers only do what they are programmed to do, and they will follow their programs to illogical conclusions.” In the movie, Matthew Broderick played a teenage hacker who managed to remotely access the United States missile defense system and initiate a “Global Thermonuclear War” scenario that he mistakes for a computer game. Ultimately, Ebert said the film’s message was, “Sooner or later, one of these self-satisfied, sublimely confident thinking machines is going to blow us all off the face of the planet.”