Soviet montage technique from 1920s — collision of opposing shots creates meaning. Eisenstein's infant carriage + troops generates horror through juxtaposition alone.
Montage confrontation—not as a mere succession of shots, but as meaning generation through image collision—operates on a principle systematically researched by Soviet montage theorists in the 1920s. Eisenstein called it Perestroika: the transformation of reality through the forced encounter of two opposing images. The viewer experiences not an addition (Image A + Image B = A+B), but a chemical reaction. The classic example remains unsurpassed: policemen in a stairwell, a baby carriage rolling down—the confrontation of these two moments generates meaning that lies in neither individual shot. No explicit horror cut is needed, no violent imagery in the classic sense. The void between the shots is filled by the viewer's brain.
In practice at the editing table, Perestroika works when you consciously pursue thematic tension rather than chronological logic. This means: don't cut based on "and then what happened," but on "what happens if I let these images collide?". A face full of fear, followed by an empty doorway—the viewer constructs for themselves who or what lurks behind the door. This works in crime films, thrillers, but also in everyday dramatic editing. Many modern editors implement this very principle unconsciously: when you show a reaction before the action, you are using Perestroika. The viewer is not passive; they become a co-author.
The practical difference from classic shot-reverse-shot editing lies in the intention. Shot-reverse-shot builds narrative continuity. Perestroika deliberately interrupts this continuity—to create a new layer of meaning. This makes Perestroika valuable when you have to work with a tight budget. You don't need expensive special effects, no editing weapons in the classic sense. You combine existing material intelligently. An old film about everyday life, cut against a soundtrack of war noise—Perestroika. A portrait of a person, interrupted by images of destruction—meaning is immediately created that the script doesn't explicitly formulate. This is the power of this technique, and it still works today just as it did a hundred years ago.