When I asked Sam Shillace, who ran Gmail and Google Apps…
““When I asked Sam Shillace, who ran Gmail and Google Apps for four years, about the costliest mistake he's seen engineers make, his response was, "Trying to rewrite stuff from scratch -- that's the cardinal sin.””
About This Quote
This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.
Rewriting from scratch is a major engineering error; it wastes resources and risks quality.
In simple terms: Avoid rebuilding existing solutions; reuse proven code.
Prioritize refactoring over complete rewrites.
Themes
Mood
Type
When to use this quote
- startup projects
- legacy system upgrades
- team onboarding
- budget planning
Key Concepts
Questions to Reflect On
- What criteria justify a full rewrite?
- How to balance innovation with existing stability?
Sometimes a rewrite is needed for fundamental redesign.