
“Familiar thoughts feel true fast.”
– Daniel Kahneman
Your brain favors familiarity over accuracy. What feels right goes unquestioned, not because it’s true, but because it’s familiar.
This bias shapes how we face uncertainty, from everyday choices to life-changing decisions.
The psychology of ambiguity: why we avoid the unknown
An experience we all might understand is a trip to the dentist, which reveals ambiguity aversion, our tendency to prefer risks with known probabilities over unknown risks, even when the unknown option might be better.
It is when the unknown feels scarier than the known risk. You are sitting in the waiting room, hearing the drill long before it starts, and feeling the apprehension of not knowing exactly how much it will hurt or what the final bill will be.
You fear the unknown, the what-ifs, or the possibility of a surprise complication, pain, or the unknown severity of the treatment.
Uncertainty and ambiguity are distinct challenges in decision-making. Uncertainty refers to unpredictable outcomes and ambiguity, relating to unclear, open-ended situations that are open to multiple interpretations. It is a lack of clear information or a framework.
Understanding this distinction is essential to the journey this blog explores. This blog is on a year-long arc of seeking clarity → narrative→ truth → humility. It is a journey to uncover some of the hidden biases and assumptions that guide our lives. Our blind spots. We seldom notice the factors influencing our decision-making.
This discomfort with the unknown is precisely what Ellsberg’s experiment revealed.
What is the Ellsberg Paradox
The Ellsberg Paradox shows that when probabilities are unknown, we often make irrational, suboptimal decisions, such as delaying care until a small problem becomes a major emergency. The key question is what is going to happen?
Daniel Ellsberg popularized it in 1961, as it challenges traditional theories that assume rational, consistent decision-making. The Ellsberg paradox illustrates that people’s natural aversion to uncertainty can work against them.
The paradox states that when given a choice, people consistently prefer situations with calculable risks over those with uncalculable risks, even if the latter might offer better outcomes.
We each exhibit ambiguity aversion, a dislike of missing information, which ties into a dislike of bad outcomes. These decisions occur in our unconscious mind. Our purpose today is to bring your aversion to ambiguity into your conscious awareness and show you its impact on your life decisions.
You are shopping for a new laptop. You find a model from a new company that offers double the storage and higher speed for a lower price. However, you choose the more expensive, less powerful Dell or Apple computer instead. In marketing, customers prefer known brands to unfamiliar ones, even when the unknown alternative is superior.
The aversion is that you avoid the unknown quality of the new brand because it feels riskier. We stick with the familiar brand to avoid the fear that the product will fail unexpectedly.
We choose options where we can clearly define the probability of success. The aversion could be as simple as ordering the same safe item at a restaurant instead of trying something new.
We often avoid promising chances simply because we can’t calculate the odds.
Why does ambiguity trigger discomfort?
We feel more comfortable making decisions when we have all the information. Missing information makes the mind focus on possible negative outcomes. It even involves evolutionary safety, since historically, early humans who avoided unknown situations, like unfamiliar berries, were more likely to survive.
Neuroscience shows that risk and ambiguity involve different brain circuits, with ambiguity triggering a more significant emotional response. So, our brains overvalue certainty.
Behavioral Bias Bingo – Ellsberg/Allais paradoxes: choice under uncertainty, by David Foulke
How the Ellsberg Paradox shows up in everyday life

It shows up in our career decisions, as most of us choose the safer path. For example, choosing between a secure, well-defined corporate job and an opportunity at a promising but unproven startup.
The paradox is that even if a startup offers higher potential growth and equity, many people choose the corporate job because they can assess the risk, such as salary, or they can see a clear path to a promotion.
In relationships, it may show up as staying where it is most familiar. Choosing a comfortable, average relationship over a chance at a new, possibly amazing one.
The paradox is that we tend to overvalue the current situation simply because the risks are known, even if that situation is substandard. It leaves us sticking with what is familiar, what we already know, be it a hobby, travel destination, or learning path, rather than trying something new.
Risk Aversion and the Roots of Anxiety, by John T. Maler, Ph.D. (Psychology Today)
The emotional roots of ambiguity aversion in everyday life
It is a way to bypass discomfort and perceived danger. The primary emotional roots of ambiguity aversion are fear of loss, fear of regret, and fear of identity disruption.
We experience the emotional pain of the fear of loss much more intensely than the pleasure of an equivalent gain. In uncertain situations, we automatically prioritize avoiding harm.
When the probability is unknown, we often assume the worst-case scenario. This ambiguity aversion makes us feel that staying in a known, safe, or even inferior position is better than risking a potential (but unknown) loss.
There is even a neuro-emotional connection. Studies show that the amygdala, a region of the brain, is responsible for processing fear. It is highly active when we make choices in ambiguous situations, suggesting that uncertainty is processed as a threat.
We also have a fear of regret, or regret aversion. An anticipation of feeling bad if a chosen option turns out to be inferior, especially if that decision can be compared later with what could have been.
The fear of regret is amplified when we know we will learn the outcome of the alternative we didn’t choose. Such as watching a stock you sold continue to rise.
Fear of identity disruption or identity conflict. Uncertainty and ambiguity are not just financial threats; they are threats to one’s sense of self, competence, and stability. When we are forced to make decisions with unknown outcomes, we fear the result will disrupt our existing identity or undermine our sense of competence.
Navigating uncertainty

How did you do during the 2020 pandemic? People responded to the uncertainty of the 2020 pandemic in psychologically revealing ways. The Ellsberg paradox is a perfect lens. When probabilities are unknown, humans gravitate toward whatever restores a sense of familiarity, even if the strategies are imperfect.
The pandemic created exactly that kind of ambiguity, shifting rules, evolving science, and no clear timeline. Individuals coped through a mix of useful, relational, and avoidant behaviors.
Uncertainty during COVID-19 wasn’t just informational; it was existential. Research on uncertainty management during the pandemic highlights several psychological dynamics.
In their book, Uncertainty and Coping During COVID-19, Walid A. Afifi and Tamara D. Afifi looked at how people coped with the pandemic.
- When outcomes can’t be predicted, the brain interprets this as a sign of danger. COVID-19 created simultaneous uncertainty about health, jobs, relationships, and the future, amplifying stress responses.
- The Theory of Resilience and Relational Load (TRRL) shows that strong, well-maintained relationships help people better tolerate uncertainty. Couples and families with healthier communication patterns experienced less psychological strain.
- Communities tried to manage uncertainty collectively, sharing information, checking on loved ones, coordinating resources, and creating shared narratives about what was happening. This communal meaning-making reduced the emotional burden.
The pandemic was a global Ellsberg experiment, with uncertain probabilities, shifting information, and our instinct to cling to the known.
Learning to accept uncertainty means teaching your mind to endure discomfort instead of immediately trying to resolve it. Key practices include slowing the impulse to resolve ambiguity through action or reassurance, naming the unknown without making assumptions, and using sensory grounding techniques to remain present, rather than trapped in future-focused “what if” scenarios.
Instead of trying to eliminate uncertainty, accept that it is temporary. Allow yourself to sit with discomfort to build resilience. Reframe how you view the situation; replace “what if” scenarios with “I can manage not knowing”.
We tend to fill the void or the unknown with negative stories. Bring the feeling out of the dark; examine it. Try to label it, give it a name. I am experiencing uncertainty about this situation.
Ask yourself: “Are my thoughts true? Are they helpful?” Separate fact from fiction.
Seven Ways to Cope with Uncertainty, by Christine Carter
30 Grounding Techniques to Quiet Distressing Thoughts, by Crystal Raypole (Healthline)
Conclusion

The pandemic was a real-world demonstration of ambiguity aversion. When probabilities are unclear, we seek psychological certainty through routines, relationships, narratives, and sometimes through avoidance. The discomfort wasn’t just about the virus. It was also about the absence of reliable probabilities, the very condition that makes the Ellsberg paradox so powerful.
The core of the paradox is that humans dislike “unknown risks” more than “known risks,” even if the potential for gain is higher with the unknown. This aversion causes us to avoid potentially beneficial opportunities. Understanding this bias can help individuals manage it, though ambiguity aversion is hard to eliminate.
Here’s how to retrain your mind to coexist with uncertainty.
During the 2020 pandemic, many people coped by deliberately focusing on what was stable in their lives: family, health, nature, or small daily rituals. This positive thinking strategy reflects a psychological shift to reclaim control when external conditions are unpredictable.
People established new daily patterns, such as walking, cooking, exercising, and pursuing hobbies, to counteract the loss of normalcy. Routines act as mental anchors when the external world feels chaotic.
Crafting projects, cooking, gardening, and home repairs were immersive activities that helped people regulate anxiety by focusing on something controllable and engaging. It was amazing how many people started baking bread; it skyrocketed globally.
Is your ambiguity aversion holding you back from your full potential?
Next week’s blog, we’ll move to transforming uncertainty into a lifelong learning mindset.
Recommended reading
The Art of Uncertainty: How to Navigate Chance, Ignorance, Risk and Luck, by David Spiegelhalter
Dealing with Uncertainty: The art and science of resilience and decision-making, by Laurie Bowman
How to Fall in Love with Questions: A New Way to Thrive in Times of Uncertainty – Transform from Stuck to Purpose with Behavioral Science and Rilke’s Wisdom, by Elizabeth Weingarten
How to Put Uncertainty—Fear of the Unknown—In Your Control, by Diane N. Solomon, Ph.D.
10 tips for dealing with the stress of uncertainty, American Psychological Association
The science of uncertainty, American Psychological Association
Citations
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