Is Biology Truly Binary? Rethinking What Shapes Our Human Experience
Exploring whether the stories we learned about biology reflect the beautiful complexity of life itself.
🔹 About this Series
Unravelling the Loom is a reflective exploration of gender, perception, and belonging. As a gender diversity and inclusive leadership expert, I believe that gently questioning the foundations we have inherited is essential to weaving a more inclusive future.
In this piece, I invite you to explore another deeply familiar belief:
Is biological life truly binary?
Or, if we look more closely, does life itself tell a richer and more intricate story?
Is Biology Truly Binary? Rethinking What Shapes Our Human Experience
From early childhood, the idea that biology is binary—male or female, XX or XY—felt like an unquestionable fact.
It offered clarity. It offered simplicity. It gave society an easy map to organise people into two distinct categories.
For much of my life—decades, in fact—the world saw me through the lens of the binary map, and identity was shaped around that expectation. I lived the life that was expected of me, because living differently wasn't something I yet had the language—or the permission—to imagine. Simplicity, in those years, felt like safety. But deep within, even from an early age, there was an incongruence—a sense that the map offered to me was not truly my own.
Puberty deepened that sense of loss, as my body changed in ways that moved me further from the self I internally recognised, even if I did not yet have the words to claim her.
It wasn't until life itself invited me to listen more closely—to experiences, to bodies, to belonging—that I began to see the spaces between the lines.
When we look closer, with curious and compassionate eyes, biology reveals a very different story.
Scientists today recognise at least 25 regularly occurring variations within the sex chromosomes—beyond the familiar XX and XY patterns. These variations are not anomalies. They are part of the natural fabric of humanity—threads that occur, again and again, across time and across cultures.
Even among those assigned female at birth, biology is not a fixed script. Hormones vary. Developmental pathways diverge. Experiences of embodiment differ profoundly. There is no single, universal blueprint for what it means to inhabit a body called "woman."
The binary assumption—that biology always divides neatly into two static categories—offers a comforting simplicity.
But it asks us to look away from the breathtaking complexity that is already written into life itself.
Life does not insist on opposites.
It insists on possibility.
Recognising the natural diversity of biological life is not a rejection of science. It is an embrace of science at its most beautiful—curious, evolving, and deeply attuned to the wonder of what it means to be alive.
It reminds us that humanity's richness was never a flaw.
It was always the design.
If questioning the binary assumption resonates with you, I invite you to hold that discomfort gently—and allow space for wonder to grow.
In seeing beyond the neat boxes we were given, we open the door to more inclusive, more compassionate ways of seeing ourselves and each other.
🧵 If this reflection speaks to your journey, I welcome you to stay connected and continue exploring with me.
#AcceptanceWithoutUnderstanding #UnravellingTheLoom #InclusiveLeadership #TransitionsAndTruths
🌛 Unravelling the Loom is part of my broader body of work on inclusive leadership and gender perception, and will be published in one of my upcoming books.
This article is © Cynthia Fortlage, 2025, and may be quoted or shared with attribution. Please credit the author and link to the original when sharing.
If this work resonates with your leadership journey, I invite you to subscribe and support the ongoing development of this series and future content. Together, we’re weaving a more inclusive future—one story, one insight, one thread at a time.
