Occam’s Razor
The simplest explanation is usually the right one. Not always. Usually
1. The Man Behind the Razor
William of Ockham was a 14th-century English friar and philosopher.
He didn’t invent the idea. Versions of it had existed before him. But he stated it so clearly, so repeatedly, and so usefully that it became his.
The original Latin: “Entities must not be multiplied beyond necessity.”
In plain English: don’t add more explanations than you need.
If two theories explain the same thing equally well, the simpler one is probably closer to the truth.
That’s it. That’s the razor.
It sounds obvious. It is obvious. And yet it is violated constantly — in science, in business, in medicine, in the stories we tell ourselves about why things went wrong.
2. Why It’s Called a Razor
The metaphor is deliberate.
A razor cuts away. It removes what doesn’t belong.
Occam’s Razor is a tool for cutting away unnecessary assumptions, unnecessary complexity, unnecessary layers of explanation — until what remains is the simplest version that still accounts for everything you’re trying to explain.
You’re not cutting away truth. You’re cutting away the excess that obscures it.
3. Where It Actually Matters
In medicine:
A patient comes in with a headache, fatigue, and mild fever. One doctor constructs an elaborate theory involving three separate conditions interacting in an unusual way. Another doctor says: it’s probably a viral infection.
Occam’s Razor doesn’t say the elaborate theory is wrong. It says: start with the simpler explanation. Rule it out first. Then go deeper if you have to.
Most of the time, the simpler explanation is right. The patient has a viral infection.
In engineering:
A system fails. The team spends three days investigating a complex cascade of edge cases and rare interactions. Then someone notices a loose cable.
The principle applies everywhere: before you build a complex model of what went wrong, ask whether something simple explains it first.
In business:
Sales are down. The leadership team constructs an elaborate analysis — market shifts, competitive dynamics, macroeconomic headwinds, brand perception issues.
Maybe. Or maybe the sales team lost two of its best people last quarter and nobody replaced them yet.
Start simple. Add complexity only when simplicity fails.
4. What the Razor Is Not
This is where people get it wrong.
Occam’s Razor is not a guarantee. It’s a heuristic — a starting point, not a conclusion.
The simpler explanation is probably right. Not always right.
Sometimes reality is genuinely complicated. Sometimes the elaborate theory is correct and the simple one is wrong. The history of science is full of cases where the counterintuitive, complex explanation turned out to be true — quantum mechanics being the obvious example.
The razor tells you where to look first. It doesn’t tell you where to stop looking.
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The mistake is treating it as a rule rather than a tool. Using it to dismiss complexity prematurely. Cutting too deep and removing something that was actually necessary.
A razor in the wrong hands still cuts.
5. The Organizational Version
There’s a version of this that plays out in every organization, at every level.
When something goes wrong, the instinct is to reach for complexity. To build a narrative that accounts for every variable, that distributes responsibility broadly, that requires a sophisticated response.
Sometimes that’s necessary.
But often, the real explanation is simpler and more uncomfortable: the wrong person was in the wrong role. The incentives were misaligned. The decision was made without the right information.
Simple explanations are harder to sit with — not because they’re less accurate, but because they’re more actionable. A complex explanation gives you something to study. A simple explanation gives you something to fix.
Complexity is sometimes a defense mechanism against clarity.
6. The Personal Version
We do this to ourselves too.
When a relationship breaks down, when a project fails, when a habit doesn’t stick — the mind reaches for elaborate explanations. Timing. Circumstances. The behavior of others. The complexity of the situation.
Sometimes those explanations are true.
But sometimes the simpler answer is sitting right there, waiting to be acknowledged.
Occam’s Razor applied personally is not self-blame. It’s intellectual honesty. It’s the discipline to ask: before I construct a story that requires ten moving parts, is there a simpler story that explains this just as well?
Usually there is.
7. Where This Fits in the Series
- Marketing Myopia → Define your business correctly
- JTBD → Understand what customers actually need
- Blue Ocean → Design markets where you don’t have to compete
- Innovator’s Dilemma → Recognize disruption before it recognizes you
- Crossing the Chasm → Sequence your go-to-market correctly
- OKR → Connect strategy to execution
- The Learning Organization → Extract something from what you’ve executed
- The Lean Startup → Build execution around learning
- The Flywheel Effect → Let consistent, compounding effort do what dramatic moments never can
- Occam’s Razor → Before you build a complex explanation, ask whether a simple one works just as well.
Strategy, execution, learning — all of it benefits from the discipline of simplicity.
The most elegant solutions are rarely the most complicated ones.
8. One Question for This Week
Think about a problem you’re currently trying to solve — in your work, your team, or your thinking.
Then ask:
“What is the simplest explanation that accounts for everything I’m seeing? And have I actually ruled it out — or just assumed it was too simple to be right?”
The razor is waiting.
