Duplication may be the root of all evil in software.

““Duplication may be the root of all evil in software.””

Robert C. Martin

About This Quote

This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.

Duplicating code creates hidden dependencies and maintenance burdens, leading to systemic problems.

In simple terms: Copying code causes problems.

Key Takeaway

Avoid duplication, keep code DRY.

Themes

software design maintenance quality

Mood

analytical pragmatic

Type

technical advisory

When to use this quote

large codebases
team projects
refactoring
legacy systems

Key Concepts

DRY principle technical debt software evil

Questions to Reflect On

When is duplication justified?
How can you balance DRY with readability?

A Different Perspective

Duplication can sometimes be pragmatic for performance.

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