Walter Murch's Rule of Six: How to Judge Every Cut

Walter Murch is the editor behind Apocalypse Now, The Godfather Part II, and The English Patient — three films whose cuts feel inevitable, almost biological. In his landmark book In the Blink of an Eye, he distills a lifetime of editorial instinct into a deceptively simple framework he calls the Rule of Six. The rule names six qualities a good cut must serve, assigns each a percentage weight, and ranks them in order of importance. Understanding it will not tell you exactly where to cut, but it will tell you whether the cut you just made is worth keeping.

What Is the Rule of Six?

Murch identifies six criteria that every edit is evaluated against, whether consciously or not. He assigns each a percentage that represents how much it should influence your decision. Listed in order of priority, they are: emotion (51%), story (23%), rhythm (10%), eye-trace (7%), two-dimensional plane or stage line (5%), and three-dimensional continuity (4%).

The percentages are not arbitrary. They encode a philosophy: the things that an audience feels most deeply matter most. Technical correctness sits at the bottom of the list precisely because a cut can be spatially perfect and still feel dead. A cut can violate every rule of screen direction and still feel right if it is happening at the right emotional moment for the right narrative reason.

Murch is explicit that these criteria form a hierarchy, not a checklist. When they conflict — and they will — the higher-ranked value wins.

1. Emotion — 51%

Emotion sits at 51% because it is, in Murch's view, the whole point of cinema. Does this cut make the audience feel the right thing at the right moment? If the answer is no, no amount of technical virtuosity can save the edit. If the answer is yes, the edit has already done more than half its job.

The 51% figure is deliberate: emotion alone is the majority. That means you could theoretically get every other criterion wrong and still have an edit worth defending if the emotional beat lands. Murch observed that audiences forgive spatial inconsistencies and rhythm problems when they are emotionally invested. They become acutely aware of those same problems the moment the emotional current drops.

In practice, chasing emotion means asking: what does the character feel right now, what do I want the audience to feel, and does cutting here amplify or interrupt that? If a held frame keeps building tension better than a cut, do not cut. The edit serves the feeling, never the other way around.

2. Story — 23%

Story accounts for 23% of the decision. Does this cut advance the narrative? Does it reveal new information, shift perspective, or move a character closer to or further from a goal? A cut that serves emotion but muddles the plot is still a flawed cut — it just ranks higher than one that muddles plot while also feeling wrong.

Story in Murch's sense is not restricted to plot mechanics. It includes character revelation, theme, and the cause-and-effect chain that gives an audience a reason to keep watching. When an editor asks whether a scene is earning its runtime, they are asking a story question. Cutting for story means removing anything that does not contribute to that forward momentum, even if it is beautifully shot.

3. Rhythm — 10%

Rhythm accounts for 10% and refers to the internal beat of the film — not just music, but the tempo at which images succeed one another and the pacing of dialogue, action, and silence. A cut that arrives too early feels rushed; one that arrives too late feels slack. Both problems pull the audience out of the dream.

Murch's blink metaphor is useful here. He observed that we blink in real life at moments of mental punctuation — when a thought completes, when our attention shifts. A cut that arrives at the equivalent cinematic moment of that blink feels natural. One that cuts mid-thought interrupts the inner rhythm the audience has unconsciously adopted.

Rhythm is the criterion where music editors and picture editors most often find common ground. A cut timed to a musical accent, a beat of silence, or a character's breath can feel correct for rhythmic reasons alone, though Murch is clear that this justification ranks below emotion and story.

4. Eye-Trace — 7%

Eye-trace accounts for 7% and asks: where is the audience's attention on the screen before the cut, and where does it land after? When a cut happens, the eye travels to the area of the new frame that carries the most visual interest. If the subject of attention in frame A was centered and the subject of attention in frame B is hard left, the viewer's eye must make a long journey. That journey takes time and costs engagement.

Good eye-trace means placing the point of interest in both frames close enough together that the cut feels like a continuation of attention rather than a redirection. Action edits often exploit this deliberately — a punch thrown in the right side of the frame cuts to the reaction on the left, and the visual contrast itself creates impact. That is an intentional violation used for effect, which is very different from an accidental one.

5. Two-Dimensional Plane / Stage Line — 5%

At 5%, the two-dimensional plane criterion addresses the 180-degree rule, also called the axis of action or stage line. Crossing the line without a motivated reason can reverse the apparent positions of characters on screen and disorient the viewer about who is facing whom.

Murch places this near the bottom not because it is unimportant but because it is often reparable in other ways — a cutaway, an over-the-shoulder shot that re-establishes geography, or a camera move that carries the audience across the line — and because its violations are far less disruptive to a genuinely engaged audience than an emotionally flat cut.

The ranking also reflects the reality of production: coverage is often imperfect, and the editor's job is to build a coherent scene from what exists. Forcing a cut to honor the stage line while sacrificing emotional continuity is a bad trade.

6. Three-Dimensional Continuity — 4%

Three-dimensional continuity sits last at 4%. This is conventional continuity editing: matching action across cuts so that a hand raised in one shot is at the same height in the next, that a glass is in the same position, that clothing matches. It is the criterion most obsessed over on set by script supervisors and most frequently overridden in the edit.

Murch's placement of continuity at the bottom is one of the most instructive things about the Rule of Six. Traditional film education often treats continuity as the primary law of editing. Murch inverts this entirely. A continuity error that nobody notices — because the emotion, story, and rhythm are all working — is not a problem. A continuity error that people notice is usually a symptom of a cut that has already failed at a higher level.

This does not excuse careless coverage. It simply means that in the edit, continuity is a tie-breaker, not a deciding vote.

Using the Rule of Six in Practice

The Rule of Six is most useful as a diagnostic tool. When a cut is not working and you cannot identify why, run through the six criteria from the top. Does this edit serve the emotional moment? Does it serve the story? Does it arrive at the right rhythmic point? Work down the list until you find the criterion that is being violated, and that violation will often point to the fix.

The rule also helps you hold your ground in editing conversations. When a director asks for a cut and your instinct says no, the Rule of Six gives you a shared vocabulary for the disagreement. Instead of saying the cut feels wrong, you can say it interrupts the emotional arc established in the previous two scenes — a claim that is specific, defensible, and grounded in craft.

Finally, the rule is a reminder that editing is fundamentally an act of empathy. The question Murch is always asking is: what does the audience need to feel, and what does the audience need to understand, at this precise moment? Everything else is in service of that.