On the specific genius of Buster Keaton as a filmmaker and why his directorial achievements are as important as his performing ones.

Keaton is primarily known as a performer — the Great Stone Face, the actor who performed his own dangerous stunts without apparent distress. His directorial work is less discussed because he is less frequently credited as director, and because the directing and performing were inseparable in his most important films.

The General (1926) is the film where Keaton's formal intelligence is most visible. The film is set during the American Civil War and follows a train engineer trying to recover his stolen locomotive. The action sequences — including the collapse of a bridge with a full-size locomotive on it, the most expensive shot in silent film history — are shot with a compositional logic that is not showy but is structurally perfect.

Keaton understood that comedy emerges from the discrepancy between the scale of the situation and the apparent scale of the response. His character's deadpan is the formal instrument of this discrepancy: the world around him is catastrophic and he responds with functional pragmatism. The comedy is structural, not performed.