The Day I Learned Why the Fence Was There
Don’t remove a fence until you understand why it was put there in the first place.
Before I knew the name Chesterton’s Fence, I crashed headfirst into one.
The principle is simple.
It’s advice that applies equally well to organizations, processes, and software systems.
Unfortunately, I learned it the hard way.
The Keys to the Kingdom
Years ago, I started a shiny new role managing product information. In my mind, I had been handed the keys to the kingdom. For one brief and glorious moment, I was Yertle the Turtle, king of all I could see.
As I explored the product catalog, one particular detail caught my attention.
Product titles were limited to 30 uppercase characters.
Not approximately 30.
Exactly 30.
And they looked ridiculous.
Anyone who has worked with older systems has seen these kinds of abbreviations:
PREM WHT VINYL WDG 36X72
BLK STL CAB ASSY LG
The titles were squished, cryptic, and difficult to understand.
Unnecessary Constraints
Naturally, I assumed I had discovered an obvious mistake.
After all, the database could store 256 characters. The downstream systems could store 256 characters. I confirmed we supported ASCII and Latin character sets. We could have proper, human-readable product names. We could support Spanish and French without awkward abbreviations. We could finally let product names look like... well, product names.
From where I sat, the limitation looked completely unnecessary. So I didn't tear it out all at once. I was careful. I started by updating a handful of products and followed them through the systems I knew about. They flowed through production. They appeared correctly in the applications. Everything looked perfect.
A week became a month. A month became several. The more I watched, the more convinced I became that I had found one of those rare opportunities where a little common sense could make everyone's job easier.
So I expanded the change to every product.
Not maliciously.
Not recklessly.
Just confidently.
Which, in hindsight, may have been the more dangerous state of mind.
For a few glorious hours, I felt rather pleased with myself. Customer service loved seeing product names that people could actually read. I was already congratulating myself on improving a system no one else had questioned.
The Invisible Systems
Then the phone rang.
The Director of Inventory wanted to see me.
Immediately.
What I had failed to understand was that buried beneath the systems I could see was another system I couldn’t. Actually, there were several.
Years earlier, someone had built an invoice generation process around pre-printed bills of lading. The forms required precise character spacing. Every title had been carefully constrained so that inventory descriptions aligned correctly on printed documents.
The thirty-character limit wasn’t arbitrary.
It was infrastructure. By “fixing” the database, I had quietly broken a process that thousands of shipments depended on.
The fence wasn’t there because someone lacked imagination.
The fence was there because someone had already solved a problem I didn’t know existed.
I had optimized the visible system while damaging the invisible one.
In other words, I had achieved a perfect score on the Dunning-Kruger exam.
History and Humility
Fortunately, the story has a very happy ending.
A long day, a pot of coffee, and a healthy dose of humility later, I managed to put everything back the way I found it.
I also learned something far more valuable than the technical lesson: how important it is to find the right person to ask when I encounter a fence that looks unnecessary.
The Director of Inventory didn’t spend the afternoon ridiculing me. He explained the history. He showed me the constraints. He helped me understand the decisions that had come before my arrival.
He shaped every other conversation I have had about legacy systems and technical debt.
What started as an embarrassing mistake became the beginning of a mentorship that has lasted for years.
What Problem Was This Solving?
Today, whenever I encounter legacy code, strange business rules, or processes that seem irrational, I try to remember that thirty-character product title.
Most organizations are filled with fences.
Some should absolutely be removed.
Others are protecting us from problems we’ve simply never experienced.
The challenge is knowing the difference.
And that starts by asking a question that younger versions of ourselves rarely ask often enough:
“What problem was this solving?”
Sometimes the answer reveals technical debt. Sometimes it reveals forgotten wisdom.
Either way, understanding the history is usually cheaper than learning it the way I did.