Celebrity Traitors UK Season 2, Episodes 5 and 6: The spreadsheet and the social reality of evidence
Watching the second season of Celebrity Traitors this week, I was unexpectedly captivated by a Cambridge mathematician armed with a system and a spreadsheet and her fate. In a game built on deception, suspicion and uncertainty, Prof. Hannah Fry appeared, in the first five episodes, to be doing something many organisations claim to value: using a systematic method to make sense of incomplete information. She was tracking patterns, testing assumptions and creating a framework through which evidence could be interpreted.
Yet they voted her out, and I felt really sorry and extremely sad for her.
Whether her conclusions were correct is almost beside the point. What interested me was what her departure revealed about decision-making itself. If a group can remove one of the most analytical people in the room while searching for the truth, what does that tell us about how human beings make decisions?
The activities are not the point. They are the mirror.
For a long time, I assumed the activities existed primarily for entertainment. The costumes, dramatic settings and physical challenges create spectacle, but I often found myself waiting for the group to return to the round table.
Recently, I realised I may have misunderstood their purpose. Viewed through a team-coaching lens, the activities are not separate from the decision-making process. They produce the raw material from which that process emerges.
In structured team work, an activity is rarely just an activity. It makes relationships, assumptions, alliances, trust, influence, communication patterns and reactions under pressure visible. The task matters, but so does what the group reveals while performing it.
The same may be true in The Traitors. Without the challenges, participants would arrive at the round table with little more than rumours, previous conversations and overnight suspicions. The challenges create additional information. They let people test hunches, observe behaviour and gather evidence, however imperfect.
A participant who appeared trustworthy yesterday may behave differently under pressure today. Someone barely noticed in conversation may emerge as influential during a challenge. Existing assumptions may be reinforced—or disrupted. The activity becomes a living laboratory for social observation.
This is what makes the spreadsheet example so revealing. The programme generates a constant stream of social data, but the group does not interpret it neutrally. Evidence passes through relationships, identities and judgements about who is credible.
It is tempting to watch such moments and conclude that people are irrational. The programme certainly offers flawed judgements, misplaced certainty and emotional reasoning. Participants become convinced by weak evidence, overlook stronger evidence and sometimes turn on the people attempting to improve the quality of collective thinking.
Yet irrationality alone does not explain what we are seeing. The deeper lesson may be that decision-making has never been a purely cognitive activity. It is also a social one.
When groups face uncertainty, the questions subtly change. Instead of asking, “What does the evidence suggest?”, people begin asking: Who do we trust? Who belongs? Who feels right? At that point, the person presenting the evidence can become more important than the evidence itself.
What this looks like in organisations
Most of us have witnessed versions of this in organisational life.
A carefully researched proposal loses out to a compelling story. A risk assessment is ignored because it creates discomfort. A dissenting voice is marginalised because it threatens an emerging consensus. A confident speaker gains influence despite offering little evidence.
The decision becomes less about facts alone and more about relationships, identity, status and belonging. In that sense, The Traitors is not simply a game about finding deceit; it is an unusually clear illustration of how groups construct reality together.
Why belonging can outweigh accuracy
This leads to a deeper question. If human beings are so vulnerable to bias, groupthink and social influence, how did we build universities, develop medicine, create scientific methods and send people into space?
Perhaps we did not progress because we became perfectly rational. We progressed because we were sufficiently social.
For most of human history, survival depended on cooperation. Acceptance by the group was often more important than objective correctness. The person who could maintain alliances, read social cues and build trust may have contributed more to collective survival than the person who won every argument.
In evolutionary terms, belonging frequently mattered more than accuracy.
An ancient brain in a modern organisation
Many of today’s systems require forms of reasoning our ancestors never faced. We use brains shaped for small groups and immediate threats to make decisions about complex organisations, financial systems, public policy and global challenges.
We therefore bring ancient social instincts into environments that demand sophisticated analytical thinking.
Perhaps that is why organisations can struggle with decision-making despite employing highly intelligent people. The challenge is rarely intelligence alone.
It is the interaction between intelligence and social dynamics.
Designing for human decision-making
I originally thought, therefore, that human fallibilities might have thwarted our evolution. But further consideration reveals that our fallibilities may not be merely obstacles to progress. Some may also contribute to it.
From teaching creativity and Innovation, I know that Innovation is not always rational. People pursue ideas that appear unlikely to succeed, persist despite failure, trust others before certainty exists and imagine possibilities that cannot yet be proven.
Creativity, courage and invention emerge from some of the same psychological machinery that can lead us astray. Our imperfections and achievements may be more closely connected than we like to admit.
That does not mean celebrating poor decisions or abandoning evidence for intuition. It means recognising that leadership cannot eliminate human nature. It must work with it.
Good decision-making systems make room for data without neglecting relationships. They test assumptions before and after shared experiences. They invite dissent before consensus hardens. They distinguish confidence from evidence and pay attention to whose voice is trusted, whose is discounted and why.
Perhaps this is why I find The Traitors so fascinating. Beneath the entertainment, it reminds us that decision-making is rarely about logic alone.
It is about people trying to reason together under conditions of uncertainty—observing one another, interpreting imperfect evidence and deciding whom to believe.
It is about people trying to reason together under conditions of uncertainty—observing one another, interpreting imperfect evidence and deciding whom to believe.
Sometimes that produces wisdom. Sometimes it produces the wrong answer with complete conviction.
And sometimes it results in voting out the person with the spreadsheet.
The challenge for leaders is not simply to bring better evidence into the room. It is to create the social conditions in which that evidence can actually be heard.
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