The film has been criticized for distortion of history for dramatic effect, and miscasting in its choices of Paul Newman for the role of General Groves, and Dwight Schultz for the role of Oppenheimer. Noted critic Roger Ebert felt the film lackluster, giving it 1½ stars, saying, "The story of the birth of the bomb is one of high drama, but it was largely intellectual drama, as the scientists asked themselves, in conversations and nightmares, what terror they were unleashing on the Earth. Fat Man and Little Boy reduces their debates to the childish level of Hollywood stereotyping." The film holds a 50% rating on review aggregate Rotten Tomatoes based on 24 reviews.