Unless we see and intervene in the pattern, no amount of listening and being heard will make a difference.

In couple work, this accumulated organisation is what we refer to as the pattern. This connects directly to Maturana’s idea of co-ontogenic structural drift (Maturana & Varela, 1987; Maturana, 2002).

The core idea is simple. Living systems change through their interactions with their environment. These changes accumulate over time and follow the history of those interactions rather than any predetermined path. Maturana referred to this as structural drift (Maturana & Varela, 1987).

In close relationships, the partner becomes the primary environment. Each response from one person becomes a condition to which the other adapts. Over time, these repeated responses begin to organise not only individual behaviour, but the interaction itself.

Through this process, couples become structurally coupled (Maturana & Varela, 1987). Each partner becomes a recurring source of perturbation to which the other responds, and gradually their responses begin to coordinate through the history of those interactions. This coordinated adaptation is co-ontogenic structural drift.

Two people interact thousands of times over the course of a relationship. One partner withdraws when tension rises, and the other responds by pushing harder. The pushing increases the withdrawal, and the withdrawal increases the pushing. In other relationships, both partners escalate engagement and the interaction spirals in intensity. In others, both partners gradually withdraw from each other.

Over time, the interaction stabilises. No one designed it. No one explicitly decided that this is how the relationship should function. It emerges through repeated interaction.

This is the pattern.

The pattern is not limited to behaviour. It includes perception, interpretation, language, emotional response, and the meanings partners attach to what the other person does. Over time, all of these elements organise into a coherent interaction that sustains itself.

From this perspective, a relationship is not simply two individuals interacting. It is the history of how those two people have adapted to each other through repeated interaction.

This is an important distinction. The experiential loop describes how the interaction runs in the moment, how perception, experience, and behaviour organise into a repeating sequence. Structural drift describes how that sequence came to be organised in that way over time, and why it continues to return even when it is recognised. One explains the immediate process. The other explains the historical accumulation that stabilises that process.

This also clarifies why change is so difficult. If the pattern is the result of years of coordinated drift, insight alone does very little to alter it. Understanding the pattern does not change the interaction.

The interaction itself has to change.

A different way of interacting has to be enacted before it becomes available. A behaviour is not available simply because it has been described or understood. It becomes available once it has been brought forth in action. Systems do not shift through instruction. They shift through structural change.

This is why relationships repeat themselves. Each partner continues to operate within the range of behaviours that the system already allows. New responses do not appear simply because they are needed or intended. They emerge when the existing organisation can no longer sustain itself and the interaction is forced into a different configuration.

Therapeutically, this places the focus back where it belongs. Not on explaining the pattern more accurately, but on disrupting it at the point where it is produced. Only then can a different interaction be enacted, and only then can new ways of perceiving, experiencing, and behaving begin to stabilise.