Buster Keaton to have a comic slant. After Keaton's successful work with Arbuckle, Schenck gave him his own production unit, Buster Keaton Productions. He made a series of two-reel comedies, including "One Week" (1920), "The Playhouse" (1921), "Cops" (1922), and "The Electric House" (1922). Keaton then moved to full-length features. Keaton's writers included Clyde Bruckman, Joseph Mitchell, and Jean Havez, but the most ingenious gags were generally conceived by Keaton himself. Comedy director Leo McCarey, recalling the freewheeling days of making slapstick comedies, said, "All of us tried to steal each other's gagmen. But we had no luck with Keaton, because he
Buster Keaton a parody of D. W. Griffith's "Intolerance" (1916), from which it replicates the three inter-cut shorts structure. "Three Ages" also featured parodies of Bible stories, like those of Samson and Daniel. Keaton directed the film, along with Edward F. Cline. Film critic David Thomson later described Keaton's style of comedy: "Buster plainly is a man inclined towards a belief in nothing but mathematics and absurdity ... like a number that has always been searching for the right equation. Look at his face—as beautiful but as inhuman as a butterfly—and you see that utter failure to identify sentiment." Gilberto Perez commented