Most conversations about diversity in leadership are held in the wrong department.
They are held in HR, framed as culture, measured in percentages and reported once a year. That framing is not wrong. It is just incomplete – and it makes it easy for boards and executive teams to treat inclusion as something that happens to other people, elsewhere in the organisation.
I have sat in enough leadership rooms, boardrooms and – for four years – a Danish courtroom as a lay judge to have formed a simple view: diversity is a decision-quality issue. A room that thinks alike decides alike. And a room that decides alike will eventually be wrong together, at scale, with no one to notice.
That makes inclusion a governance matter. It belongs on the same agenda as risk, strategy and control.
What homogeneous rooms get wrong
The failure mode is not malice. It is comfort.
When a leadership team shares background, career path and worldview, discussions get faster and smoother. That feels like efficiency. It is often the sound of assumptions going unchallenged.
I have watched risk assessments that missed obvious customer-facing consequences because no one in the room had ever been that customer. I have watched crisis responses stall because the "right" way to escalate assumed a network everyone in the room had and half the organisation did not. I have watched succession planning that reproduced the current team almost exactly, because "fit" was the unspoken first criterion.
None of these were diversity failures in the HR sense. They were governance failures with a diversity root cause.
Inclusion is the part that does the work
Diversity is who is in the room. Inclusion is whether they can change what the room decides.
A board can hit every representation target and still function as a monoculture if the newer or different voices learn quickly that dissent is tolerated but not welcomed. The tell is simple: are decisions ever actually changed by someone who was not in the majority? If you cannot remember the last time, the diversity is decorative.
Building inclusion is slower and less visible than recruiting for diversity. It means changing how meetings run, who speaks first, how disagreement is handled, and whether leaders are rewarded for being challenged or for being agreed with.
I say this from my own leadership practice, which is rooted in what I call feminist leadership – not as a gender statement, but as a set of habits: listen before deciding, make space before filling it, and treat challenge as a contribution rather than a threat. These habits are not soft. They are how you avoid expensive mistakes.
Do and don't
Do put inclusion and diversity on the board's risk and strategy agenda, not only in the annual people report. Ask: where in our decisions are we most exposed to blind spots?
Do look at your leadership pipeline the way you would look at a supply chain. Where does it narrow? Who leaves, and when? Life-stage exits – parental leave, caring responsibilities, burnout – are a leading indicator of a culture problem, not a private matter.
Do design meetings for dissent. Ask for the counter-argument explicitly. Let the least senior person speak before the most senior one. Rotate who presents the risks.
Do measure inclusion, not only representation: who gets stretch assignments, whose ideas get adopted, who is in the informal decision loops.
Do hold leaders accountable for the teams they build and keep – not just for the results those teams deliver.
Don't treat diversity as a communication exercise. If the external story is further ahead than the internal reality, employees notice first and customers notice second.
Don't appoint one different voice and expect them to carry the change alone. Tokenism is exhausting for the person and ineffective for the organisation.
Don't confuse comfort with alignment. A leadership team that never disagrees is not aligned. It is unchallenged.
Don't wait for the perfect data. You already know whether people in your organisation can say "I think we're wrong" to someone senior and be thanked for it.
A reminder
The purpose of a diverse and inclusive leadership is not to look a certain way. It is to see more, earlier, and to be wrong less often.
That is not a values statement. It is a risk statement.
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Maj Britt Arberg is the founder of House of Moon. She has led teams in Big Four advisory and as a CEO, served four years as a lay judge in the Danish courts, and brings a feminist, inclusive leadership perspective to governance and organisational development.