Interdisciplinary Work: The Art of Seeing in Layers
Seeing in Layers: Why No Single Discipline Can Explain an Organisation
In an age of complexity, no single discipline holds the master key. Organisations face problems that are economic and psychological, cultural and procedural, structural and symbolic – all at once. Interdisciplinary work, in that environment, isn’t a luxury or a nod to intellectual fashion. It’s a requirement.
But the usual case for it is weaker than it needs to be, and getting the reason right changes what interdisciplinary work is actually for.
The weak case, and why it isn’t enough
The common argument runs like this: different disciplines know differently – finance sees rationally, HR relationally, operations procedurally – so we should assemble diverse perspectives and honour the variety.
There’s something in this, but as stated, it makes a quiet mistake, and the mistake matters.
It treats the layers as perspectives, ways of seeing, rather than as features of the world being seen. And once the layers are just viewpoints, you slide toward a conclusion that sounds generous and is actually useless: that every lens is equally valid, and the goal is inclusion.
That’s not analysis. It’s a truce between departments.
The stronger case comes from a position in the philosophy of science called Critical Realism, and it turns the argument the other way round.
The reason you need multiple disciplines isn’t that people hold different perspectives. It’s that reality itself is layered, and each discipline reaches the causes operating at one layer.
Reality is stratified, and the layers are real
Critical Realism starts from a claim that sounds abstract and turns out to be intensely practical: the world is arranged in strata – physical, biological, psychological, social – and the higher strata emerge from the lower ones without being reducible to them.
Social dynamics arise from psychology, psychology from biology, but you cannot explain a social phenomenon purely in psychological terms, or psychology purely in chemistry. Each stratum has its own real properties and its own real causes, which don’t dissolve into the layer beneath.
This is the difference the weak version misses. When finance models an organisational problem economically, and HR models it relationally, they are not offering two perspectives on one thing.
They are reaching the causes operating at two different strata of the phenomenon, both of which are really there.
The economic mechanisms are real.
The psychological and social mechanisms are equally real.
Neither discipline is a lens laid over a neutral reality; each is partial access to a genuinely layered one.
Which means a single-discipline explanation of a multi-stratum problem isn’t merely narrow. It’s causally incomplete: It is missing mechanisms that are actually operating and actually producing the outcome.
Finance isn’t wrong about the economic causes; it’s blind to the social ones, which are working whether finance can see them or not.
The problem with the siloed explanation was never that it lacked a perspective.
It’s that it left real causes out.
Why do organisations especially demand this
There’s a second Critical Realist idea that makes this unavoidable for organisations specifically.
In a closed system – e.g., a laboratory – you can isolate one mechanism and watch it act alone.
Organisations are open systems: Several generative mechanisms are always operating at once, co-producing every outcome, and you can never shut the others off to study one in isolation.
This is why the search for the root cause of an organisational problem so often fails. There usually isn’t one. There’s a structural mechanism, a psychological one, and a cultural one, all firing simultaneously, and the event you observe is what they jointly produce.
So “diagnose the interactive causal loops, not the single root cause” isn’t a preference for sophistication. It’s what the world is actually like. An open system with multiple co-acting mechanisms cannot be explained by isolating one; the isolation the method requires is precisely what the system denies you.
This is not relativism, and that difference is the whole point
Here’s where Critical Realism does its sharpest work, because the weak version of interdisciplinarity has no defence against the obvious objection: if every discipline has its own truth, isn’t this just relativism dressed up? All accounts equal, nothing decidable?
Critical Realism holds three things together, and the combination is what saves the argument.
There is one real world with real mechanisms, ontological realism.
Our knowledge of it is always partial, fallible, and shaped by the discipline doing the knowing, epistemic relativism.
And precisely because there’s a real world to be more or less right about, some explanations are better than others, judgemental rationality.
Lenses are not equally valid. They’re each partial access to a stratified reality, and an integrated account is better than a siloed one, not because it’s more inclusive, but because it captures more of what is really there.
The composite explanation wins on truth, not on courtesy.
That distinction is what separates genuine interdisciplinary analysis from a committee agreeing to respect each other’s feelings.
What layered seeing actually is, then
Read this way, the practical moves the subject usually lists stop being soft and become rigorous. Mapping the structural, psychological, and cultural layers of a problem isn’t brainstorming; it’s identifying which real mechanisms, at which strata, are co-producing the event.
Asking “what’s beneath this?” isn’t depth for its own sake – it’s the move from the observed event to the mechanism that generated it, which is the only move that explains anything.
And building composite explanations isn’t blending viewpoints politely – it’s assembling an account of how mechanisms at several strata interact to produce what you’re seeing, then testing that account against the world to see if it holds.
Cognitive diversity, on this account, isn’t hired for fairness or for the pleasure of varied opinion. It’s hired because a stratified reality has causes at every layer, and you need someone who can reach each layer’s mechanisms, then the harder discipline of integrating them rather than letting each specialist defend their stratum as the whole story.
Why this is the method beneath everything else
And here is where the layered view connects to how organisations actually work, because it’s the same argument, one level down, that explains why structure beats character as an explanation of behaviour.
When you watch someone in an organisation act: Hoard a decision, avoid a risk, burn out, disengage, you are seeing the empirical surface: the observable event.
The temptation is to explain it at that surface, as a property of the person: they’re territorial, they’re timid, they lack resilience.
But the behaviour is produced by a generative mechanism you cannot see directly: A structure in the architecture, with real causal power, operating beneath the event.
The reason the character-explanation is so persistent is that it mistakes the empirical for the real: it explains the visible event by another visible thing (the person), and never reaches the mechanism doing the actual causing.
“Same person, different architecture” is simply the Critical Realist point made concrete. Move the person to a different structure and the behaviour changes, which proves the causal power lies in the mechanism, not the individual.
This is why architecture cannot be read off the surface, and why diagnosing it requires exactly the layered seeing this piece has been describing.
The generative mechanism is real but not empirical: It doesn’t announce itself in the events it produces.
You reach it the only way open systems allow: by working across the strata, integrating the economic, psychological, and structural mechanisms into an account of how they jointly produce the behaviour you can see. Layered thinking isn’t a nicer way to run a meeting.
It’s the method by which you get from “what an organisation does” to “what is actually producing what it does,” and nothing that stays on the surface will ever find it.