In the 1910s, Russian filmmaker Lev Kuleshov demonstrated the power of film editing with a telling experiment: He intercut the “inexpressive” face of actor Ivan Mosjoukine with images of a plate of soup, a child in a coffin, and an attractive woman. Though the footage of Mosjoukine was the same in each case, an audience “raved about the acting,” noted director Vsevolod Pudovkin. “[They admired] the heavy pensiveness of his mood over the forgotten soup, were touched and moved by the deep sorrow with which he looked on the dead child, and noted the lust with which he observed the woman. But we knew that in all three cases the face was exactly the same.”

This reveals the effectiveness of montage, Kuleshov said. An audience reacts not to a film’s elements but to their juxtaposition — the sequence of images suggests an emotion to them, and they project this onto the actors. Alfred Hitchcock demonstrates: