Denial: Self-Deception, False Beliefs, and the Origins of the Human Mind by Ajit Varki and Danny Brower
Happy 2025! I hope this year is a good year for you.
A couple of years ago, I read a book called Denial: Self-Deception, False Beliefs, and the Origins of the Human Mind, by Ajit Varki and Danny Brower. I’ve written about it before here. It played an important role in my studies. It deals with our evolutionary psychology. Evolutionary psychology is something rarely considered when thinking about why we are the way we are. This book gives some very interesting and plausible explanations for our behavior.
They propose a provocative hypothesis that marries the Theory of Mind (TOM) with Mortality Awareness through the Mind Over Reality Transition (MORT) to explain one of humanity’s most perplexing characteristics: the denial of death. Their central argument is rooted in the paradox that human beings, uniquely aware of their own mortality, have also evolved mechanisms to suppress the existential terror this awareness entails. This duality, they argue, is a key to understanding not just human psychology but also the evolutionary processes that shaped our species.
The Evolutionary Conundrum of Awareness and Denial
Human beings possess an extraordinary ability to recognize that others have minds—a skill encompassed in the Theory of Mind. This capacity enables us to infer the intentions, beliefs, and emotions of others, facilitating complex social interactions and cooperation. However, TOM is not merely an interpersonal tool; it also turns inward, allowing us to imagine our future selves. This introspective ability inevitably leads to the realization of our own mortality. An organism's realization that it will eventually die marks both an evolutionary milestone and a potential psychological roadblock.
Varki and Brower posit that this acute awareness of mortality could have been paralyzing. A creature consumed by the fear of its own inevitable demise might struggle to survive, let alone reproduce. Natural selection, however, provided a solution: the cognitive ability to deny uncomfortable truths. This capacity for self-deception—what Varki and Brower term the "Mind Over Reality Transition" (MORT)—allowed early humans to sidestep the crippling anxiety of mortality while retaining the evolutionary advantages of self-awareness and social cognition.
Denial as a Survival Mechanism
The denial of death operates as an adaptive mechanism that balances the benefits of self-awareness against its existential costs. This balance is crucial. Without an understanding of mortality, humans would lack the foresight and caution necessary to avoid life-threatening dangers. But without denial, the dread of death could lead to apathy, despair, or an inability to take risks—all of which would hinder survival and reproductive success.
This interplay between TOM and MORT reveals an elegant evolutionary solution: our minds are hardwired to accept a paradoxical truth. We know, intellectually, that we are mortal, but we also possess the psychological mechanisms to compartmentalize, suppress, or distort this knowledge. This is not a flaw, but a feature that allows us to concentrate on the tasks of life—building relationships, raising children, creating art, and seeking meaning—without succumbing to the overwhelming presence of death.
The Role of Culture and Terror Management
While evolution provided the foundation for denying death, culture built the scaffolding. Varki and Brower’s ideas resonate strongly with Terror Management Theory (TMT), which suggests that cultural worldviews and symbolic systems are human constructs designed to mitigate death anxiety. Religion, art, philosophy, and even societal norms function as buffers against the existential terror of mortality. They provide frameworks that promise continuity—whether through an afterlife, a legacy, or the enduring influence of one’s creations.
“Existential Dread #9,” 9” x 12” acrylic and charcoal on paper.
This painting serves as a visual exploration of the TOM-MORT hypothesis. The abstraction invites viewers to project their fears and hopes, echoing the way denial itself operates. By obscuring the harsh edges of reality, the mind creates space for connection, creativity, and meaning. Yet, the tension in the painting suggests that denial is not absolute; the void beneath remains visible, demanding contemplation.
It’s both a personal and universal expression of the struggle with mortality. It asks us to confront the void while acknowledging the evolutionary and cultural scaffolding that has allowed us to thrive in its shadow. This piece does not offer resolution but instead invites the viewer into the complex interplay of awareness, denial, and the human condition—a visual testament to the insights into the mind’s delicate dance with reality.
These cultural constructs do more than soothe individual fears; they reinforce social cohesion. Shared beliefs about life and death foster unity, enabling groups to work together toward common goals. In this sense, denial of death is not merely a personal defense mechanism but a social glue that holds communities together.
Implications for Understanding Human Behavior
The TOM-MORT hypothesis invites us to reconsider many aspects of human behavior through the lens of denial. It explains why humans are uniquely capable of both profound creativity and devastating self-destruction. Our ability to deny death enables us to take risks, innovate, and envision futures that might never come to pass. But it also blinds us to long-term consequences, fueling behaviors that threaten our survival, such as environmental degradation and warfare.
Understanding the evolutionary roots of death denial also sheds light on the psychological struggles of modern life. In a world where traditional cultural buffers are eroding, individuals are increasingly confronted with unmediated mortality awareness. The resulting anxiety manifests in various ways, from existential despair to compulsive consumption. Yet, the same cognitive flexibility that enables denial also holds the potential for growth. By confronting the void and integrating our awareness of mortality into our lives, we can find new ways to navigate the human condition.
Varki and Brower’s TOM-MORT hypothesis offers a profound insight into the evolutionary origins of death denial. It reminds us that our ability to deny uncomfortable truths is not a weakness but a survival strategy—one that has allowed us to thrive in the face of existential uncertainty. At the same time, it challenges us to recognize the limitations of this denial. In a world where our actions increasingly have global and long-term consequences, the time may have come to reconcile our evolutionary heritage with the demands of modern existence. Only by understanding the roots of our denial can we hope to transcend it, transforming the fear of death into a catalyst for living fully and responsibly.