👋 Hey {{first_name|there}},
The Modularity Mirage
Ask a mid-level dev what modularity means, and you’ll likely hear:
“It’s about splitting code into smaller, reusable pieces.”
“Keeping things decoupled and layered.”
“Following SOLID or domain-driven design.”
None of that is wrong.
But here’s what most developers miss:
True modularity isn’t about code structure. It’s about isolating change.
Because over time, systems don’t break where the code is ugly.
They break where change collides with rigid assumptions.
Let’s break this mindset wide open.
🧭 The Mindset Shift
From: “Let’s separate concerns”
To: “Let’s separate rates of change”
Clean code is helpful.
But systems survive because they’re designed for evolution.
Architects don’t just ask:
“What are the responsibilities?”
They ask:“What’s going to change and how often?”
That’s the real reason to modularize.
Because if two parts of your system change at different speeds, but live together in the same box, your system will start to rot from the inside.