Secrets and Systems: How Hidden Information Shapes Every Relationship

Here is something that happens in almost every family, workplace, and organization: two people share information they have agreed not to share with a third person. The third person is left out. And on some level, they know it. The secret does not stay contained. It shapes every interaction in the system around it.

This dynamic has a name. Researcher and family therapist Edwin Friedman called it triangulation, and he argued it is one of the most powerful and destructive forces in any human system, from intimate partnerships to governments.

What Is a Triangle?

In human systems, a triangle forms whenever two people share a secret, an alliance, or a coalition that excludes a third person. The third party is triangled out — left with a persistent sense that something is going on that they are not part of, even if they cannot name what it is.

Friedman used a memorable example. A journalist researching the CIA could not get even basic information from them — not even how many employees they had. In desperation he called the Russian Embassy. They told him immediately. The secret was being kept not from the enemy, who already knew, but from the American public — the very citizenry the CIA was supposed to serve. The party triangled out was at home.

Why Secrets Do Not Stay Contained

Most people who keep secrets believe they are protecting someone. A parent hides a serious health diagnosis to avoid worrying the family. A manager withholds information about a layoff to avoid panic. A couple agrees not to tell their friends about the rough patch in their marriage. These motivations can be genuine and even loving. But the effect is almost always the opposite of protection.

Secrets create emotional distance. When someone senses they are being left out of information that significantly affects them, they fill the gap with their own interpretations — and those interpretations are almost always worse than the truth. The excluded person becomes more anxious, more reactive, more likely to act in ways that seem irrational to the people who hold the secret. Meanwhile, the secret-keepers carry a growing burden of vigilance that erodes the authnticity of every relationship in the system.

Triangles in Families

In families, triangulation is extremely common and often entirely unconscious. Parents who share secrets about finances, health problems, or family history create invisible barriers between themselves and their children. Adult children who form alliances around a struggling parent — deciding together what the parent should or should not be told — often believe they are being protective. But the parent almost always senses the exclusion and reacts to it, even when they cannot name what is happening.

One of the most damaging family triangles involves secrets about origin — adoptions not disclosed, affairs that produced children, biological parents whose identities are hidden. Research consistently shows that these secrets, even when never spoken aloud, create what therapists sometimes call a ghost in the family system. People sense the gap, feel the unease, and organize their behavior around something they cannot see but somehow feel is there.

Triangles in Organizations

In workplaces and organizations, triangulation often looks like this: two colleagues form a private alliance, sharing grievances about a third colleague or about leadership. The third party is never included in the conversation. The grievances never get addressed directly. Over time the triangle hardens. The excluded party becomes a scapegoat — blamed for problems they were never given the chance to address or even know about.

When leaders share information with some team members but not others, those excluded feel the asymmetry even when they cannot prove it. They become less trusting, less engaged, and more politically vigilant — directing energy toward figuring out what is really going on rather than toward the actual work. The leader believes the selective sharing was strategic. The team experiences it as divisive and demoralizing.

How to Detriangle

Friedman argued that the most important thing a leader or peacemaker can do in a triangled system is detriangle — to refuse to become the keeper of secrets that belong between two other people, and to gently but consistently redirect those conversations back toward the actual parties involved.

In practice this means several things. If someone comes to you with complaints about a third party, listen with empathy — then ask what they have said directly to that person, and encourage that direct conversation. If you are holding information that significantly affects someone, ask yourself honestly whether the protection you think you are offering is actually serving them or serving your own discomfort with difficult conversations. And if you sense you are being excluded from information that affects you, name that experience directly rather than acting out the anxiety it creates.

Transparency as a Peace Practice

The antidote to destructive secrecy is not the complete absence of all privacy. The distinction that matters is between privacy — information that is simply not relevant to share — and secrecy — information that is being actively hidden from people who are meaningfully affected by it.

Transparency means not hiding things from people who need to know them. It means having the courage to have difficult direct conversations rather than managing others through selective information. That courage is one of the most important contributions anyone can make to a more peaceful and functional system — whether that system is a marriage, a family, a team, or a community.