Why Diagnosing Organizations Is Harder Than Solving a Homicide Investigation
I spent five years supporting homicide investigations within the Metropolitan Police Service. The most important lesson I learned wasn’t about crime.
It was about reasoning.
Evidence constrains what we can reasonably conclude. It never determines what we should conclude. Reasoning does.
At the time, I assumed that lesson belonged to policing.
I didn’t appreciate how universal it was until I moved into Marketing and Communications within the Metropolitan Police. I found myself presenting the same information to journalists, communities, and senior leaders, only to watch each group draw different conclusions. The information hadn’t changed.
Its meaning had.
Years later, after moving into Organizational Development, I spent the last year studying organizational diagnosis, systems thinking, complexity science, implementation science, cognitive psychology, medical diagnosis, and investigative reasoning.
I wasn’t looking for a new methodology.
I was trying to understand how experienced practitioners make sound diagnostic judgments under conditions of uncertainty.
The more I read, the more one omission became impossible to ignore.
Organizational Development has spent decades refining diagnostic frameworks that tell practitioners what to examine and increasingly sophisticated methods that explain how to gather evidence.
Yet one question remained surprisingly underdeveloped.
How should practitioners reason from evidence to diagnosis?
That question would eventually become the foundation of The OYA Method™.
Because organizations do not intervene on reality.
They intervene on the explanation they have constructed about reality.
And the quality of every intervention depends on whether that explanation was justified.
A Case File and a Leadership Dashboard Have More in Common Than You Think
Both contain evidence. Neither contains the diagnosis.
In a homicide investigation, evidence is gathered over weeks or months.
Witness statements.
CCTV.
DNA.
Phone records.
Financial transactions.
Forensic reports.
Eventually, all of that evidence is assembled into a case file.
At that point, the evidence is largely fixed.
What remains uncertain is what the evidence justifies investigators in concluding.
Good investigators understand something that extends far beyond policing.
Evidence rarely points to a single explanation.
It eliminates some possibilities.
Strengthens others.
Weakens the rest.
But it rarely leaves only one explanation standing.
The investigator’s task is therefore not simply to collect evidence.
It is to reason from evidence toward the explanation that is best justified while remaining willing to revise that judgment if new evidence emerges.
One question sits at the center of that discipline.
What else could it be?
That question has stayed with me throughout my career.
It is, I would eventually discover, the very question Organizational Development needs to ask more often.
A Detective Builds a Case. An Organization Builds a Diagnosis.
In both, the outcome depends less on the quantity of evidence than on the quality of the reasoning.
Organizations have become exceptionally good at collecting evidence.
Employee engagement surveys.
Performance dashboards.
Customer feedback.
Behavioral observations.
Interviews.
Focus groups.
Leadership assessments.
Culture diagnostics.
Consultant reports.
There is rarely a shortage of information.
Yet organizations still misdiagnose the problems they are trying to solve.
Someone concludes there is a communication problem.
Another believes it is a leadership issue.
Someone else sees culture.
Or governance.
Or unclear roles.
Or poor strategy execution.
Each explanation sounds plausible.
Each may even be supported by evidence.
But support is not the same as justification.
Evidence constrains what is reasonable.
It does not determine which explanation deserves our confidence.
That requires reasoning.
The greatest risk is not choosing the wrong explanation.
It is allowing one plausible explanation to end the search for better ones.
A Silent Suspect. A Silent Leadership Team. Same Evidence. Different Meaning.
Evidence is observed. Meaning is inferred.
One of the strongest ideas to emerge from my research is that observable behavior is one of the richest sources of evidence available to Organizational Development practitioners.
But behavior is not explanation.
Imagine a leadership team that rarely challenges the CEO.
What does that behavior mean?
It could indicate fear.
It could indicate trust.
It could reflect strong alignment.
It could be cultural respect.
It could simply mean everyone genuinely agrees.
The behavior is observable.
Its meaning is inferred.
The evidence constrains the range of reasonable explanations.
It cannot choose between them.
That requires reasoning.
This is why collecting more evidence does not automatically produce a better diagnosis.
The quality of diagnosis depends on the quality of reasoning applied to the evidence.
A Detective Tests Theories. Organizations Often Defend Them..
Good investigations try to disprove their leading explanation. Organizations often spend their energy proving it.
Across medicine, intelligence analysis, investigative practice, and cognitive psychology, one principle appears repeatedly.
Good diagnosis is not about finding evidence that supports an explanation.
It is about testing whether that explanation remains the best account of the evidence when credible alternatives are considered.
Every discipline that works under uncertainty eventually arrives at the same conclusion.
Evidence is indispensable.
But it is never sufficient.
It narrows the field of possibilities without eliminating uncertainty.
The task is therefore not to find certainty where none exists.
It is to reason rigorously about which explanation is best justified by the available evidence while remaining willing to revise that judgment as new evidence emerges.
Yet Organizational Development has traditionally focused elsewhere.
Diagnostic frameworks tell us where to look.
Research methods tell us how to gather evidence.
Systems thinking explains how organizational elements interact.
Complexity reminds us those interactions are dynamic and uncertain.
Each contributes something valuable.
Together, however, they still leave one question comparatively underdeveloped.
How should practitioners reason from evidence to diagnosis?
That is the gap The OYA Method™ was created to address.
A Criminal Investigation Ends with a Verdict. Organizational Diagnosis Begins with One.
Too often, organizations decide what the problem is before they've fully investigated why it exists.
The OYA Method™ is not another organizational diagnostic framework.
It does not compete with Burke-Litwin, McKinsey 7S, Weisbord’s Six Boxes, or Appreciative Inquiry.
It sits beneath them.
Whatever framework practitioners use to decide where to look, the same challenge remains once the evidence has been collected.
The question is not whether the evidence supports an explanation.
Most evidence supports several.
The real question is this.
What does the evidence justify us in concluding?
The OYA Method™ was developed from a simple belief.
Organizations do not need more diagnostic frameworks nearly as much as they need better diagnostic reasoning.
It strengthens diagnostic reasoning before organizational interventions are designed.
It helps practitioners distinguish observation from interpretation.
Separate evidence from inference.
Challenge competing explanations.
Reduce premature diagnostic closure.
Recognize that confidence is not the same as accuracy.
And ensure that conclusions are earned through disciplined reasoning rather than assumed through familiarity, intuition, or consensus.
It does not replace diagnostic frameworks.
It strengthens how practitioners reason about the evidence those frameworks generate.
The Detective's Final Question. The Organization's Missing Question.
The best diagnoses are earned by challenging explanations, not protecting them.
Today, before I ask an organization,
“What’s the problem?”
I ask a different question.
“What does your evidence justify you in concluding?”
That question changes everything.
It shifts the conversation from confidence to justification.
From defending explanations to testing them.
From certainty to disciplined reasoning.
Before deciding what the problem is, I ask two further questions.
What has the evidence ruled out?
And finally,
What else could it be?
Because better organizational change does not begin with better interventions.
It begins with better diagnosis.
And better diagnosis does not begin with more evidence.
It begins with better reasoning.
Every organizational intervention begins with a diagnosis.
Every diagnosis begins with a judgment about what the evidence justifies us in concluding.
The quality of organizational change is therefore limited long before change begins.
It is limited by the quality of the reasoning that produced the diagnosis.
That is why I developed The OYA Method™.
Not as another framework for organizational diagnosis.
But as a framework-agnostic, method-neutral methodology for strengthening the reasoning that makes diagnosis possible.
Because evidence constrains what we can reasonably conclude.
Reasoning determines what we are justified in concluding.
the right to say we understand?”
If that question is answered more rigorously, everything downstream improves.
If you’re rethinking how your organization identifies the real problem before investing in leadership, culture, communication, or redesign work, we will be glad to show you how Behavioral Discovery within the OYA Method approaches that diagnostic step in practice.
