It Starts With One Incident
Every engineering team begins with logic.
Processes are documented.
Deployments are planned.
Systems are designed carefully.
Decisions are backed by data.
And then production happens.
A deployment breaks on a Friday evening.
A database migration causes an outage.
A seemingly harmless code change takes down an important service.
Suddenly, a new rule appears:
“Never deploy on Fridays.”
Nobody questions it.
Everyone follows it.
And just like that, a superstition is born.
Software Teams Are Surprisingly Human
Engineering is often viewed as a purely technical discipline.
But behind every codebase is a group of people trying to make sense of complex systems.
When something goes wrong, teams naturally look for patterns.
Maybe the outage happened after touching a specific service.
Maybe a deployment failed after skipping a checklist.
Maybe a bug appeared after changing a piece of code nobody fully understood.
Over time, these experiences become stories.
And those stories become team culture.
Every Team Has That One Thing Nobody Touches
If you’ve worked in software long enough, you’ve probably encountered it.
A service that somehow works but nobody knows exactly how.
A script that runs a critical workflow but has no documentation.
A database query everyone is afraid to modify.
An internal tool maintained by someone who left the company years ago.
Officially, these systems are just part of the architecture.
Unofficially, they’re sacred territory.
People don’t avoid them because they’re impossible to understand.
They avoid them because history has taught them to be careful.
Superstitions Usually Hide Valuable Lessons
The funny thing is that most engineering superstitions don’t appear out of nowhere.
They’re often simplified versions of real lessons.
“Don’t deploy on Fridays” really means:
Don’t make high-risk changes when fewer people are available to help.
“Don’t touch that service before a release” really means:
This system has known dependencies and needs extra testing.
“Run the script exactly this way” really means:
We don’t fully understand the edge cases yet.
The superstition survives because it’s easier to remember than the full explanation.
Complexity Creates Rituals
As systems grow, no single person understands everything.
Large applications contain thousands of decisions made over years by different teams.
Not every dependency is documented.
Not every behavior is predictable.
In environments like these, teams develop rituals.
Extra deployment checks.
Special release-day procedures.
Monitoring dashboards that everyone watches nervously.
Commands copied exactly from old documentation without modification.
From the outside, these practices can look irrational.
From the inside, they often exist because someone learned a painful lesson the hard way.
The Best Teams Learn Without Becoming Fearful
There’s a difference between healthy caution and unnecessary fear.
Strong engineering teams learn from incidents, document lessons, and improve systems.
Weak teams accumulate superstitions without understanding why they exist.
Over time, this creates bottlenecks.
People become afraid to make changes.
Innovation slows down.
Simple updates start requiring excessive approval.
The goal isn’t to eliminate every superstition.
It’s to replace assumptions with understanding.
Final Thought
For all the talk about automation, artificial intelligence, and modern software development, engineering teams remain deeply human.
They tell stories.
They share experiences.
They create rules based on lessons learned.
And sometimes those rules evolve into superstitions.
So the next time someone says:
“Don’t touch that service.”
“Don’t deploy on Friday.”
“Don’t change that script.”
Ask why.
You might discover an important lesson hidden behind what sounds like an engineering myth.
Because every engineering team eventually develops superstitions.
The best ones eventually learn the stories behind them.