The Principle of Consequences and Oppositions

20 July 2025. Published by Benoît Labourdette.
  2 min
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Replacing “then” with “therefore” or “but”: this might be the simplest and most powerful advice for bringing meaning and emotion to stories.

The power of logical connectors

To captivate the viewer’s attention in screenwriting, there are many techniques, many of which are revealed here. Here is one of the simplest, yet one of the most powerful: a method to anchor the story not only in the viewer’s emotion, but also in the very meaning of life.

These words may seem grandiloquent given the technical simplicity of my recommendation. Yet this tool remains remarkably effective. From scene to scene, from sentence to sentence, I suggest you abandon temporal connectors – “and then,” “next,” “the next day,” “the day before,” in favor of two other ways of linking your ideas, situations, scenes, chapters, or dialogue lines. These two connectors are, first, “therefore,” and second, “but”:

  1. The “therefore”: creating a world of consequences
    When we connect two situations with “therefore” rather than “then,” everything changes. What follows becomes the logical consequence of what precedes. The world then acquires meaning, a coherence in which we are invited to participate.
  2. The “but”: revealing dramatic tensions
    As for “but,” let’s imagine it introduces the following situation. It immediately reveals oppositions, antagonisms, the complex tensions that govern relationships between events. This simple word plunges us into the heart of the world’s complexity, awakening emotions, questions, concerns, unexpected alliances, and plot reversals.

An anchoring in life

Let us never neglect the possibility of articulating our transitions with “therefore” or “but” rather than simple temporal markers. This approach will anchor our stories in the vital energy and depth of existence itself.

Reference

This principle was popularized by Trey Parker and Matt Stone, the creators of South Park, during a conference given at New York University (NYU) in 2011. In this presentation, they explain: If the words ’and then’ belong between your story beats, you’re in trouble. It should be ’but’ or ’therefore’.

Their method, also called the “But & Therefore Rule,” is now widely adopted in screenplay teaching as a fundamental tool for strengthening dramatic logic and narrative dynamics.

Tools and Techniques for Screenwriting and Film Project Development.

In our world where artificial intelligences create films directly from the desires of their authors expressed in very few words, in this world where 3.5-hour films in dark theaters coexist with 10-second videos on social networks—which of these require screenplays, why, and what is a screenplay?

Is a screenplay still useful in an era where everyone carries in their pocket audiovisual creation tools of nearly professional quality? What is the purpose of a screenplay?

For writers, directors, producers, and especially content creators, as they are most often called today, I believe that the screenplay, its methods of creation, its writing techniques, and its ways of telling stories, is an extremely powerful tool to help us create the most impactful audiovisual works possible—works that will best connect with their audiences today and tomorrow, across their respective distribution platforms, whether in movie theaters, on television screens, on SVOD platforms, on community video sites, or on new media built exclusively around collaborative video like TikTok.

This guide does not claim to be exhaustive, but it is based on concrete experiences—those I have lived and those I have facilitated. For over 30 years, I have supported thousands of people in making films of all genres, founded and directed several film festivals, created numerous innovative events around audiovisual media, and also served on creative funding committees. What I share here is therefore subjective and practical, drawn from my journey and my observations in practice.


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