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smart_toyAI/PROMPT ENGINEERING

Quoting John Carmack

sourceSimon Willison
calendar_todayMarch 11, 2026
schedule1 min read
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EXECUTIVE SUMMARY

John Carmack on the Pitfalls of Over-Engineering Software

Summary

John Carmack emphasizes the challenges less experienced developers face when trying to architect software for future requirements, suggesting that such efforts often do not yield positive results.

Key Points

  • John Carmack, a prominent figure in software engineering, shared insights via a tweet in June 2021.
  • He highlights the difficulty for less experienced developers in understanding the implications of architecting for future needs.
  • The principle of YAGNI (You Aren't Gonna Need It) is implicitly referenced, suggesting that developers should focus on current requirements rather than speculative future needs.
  • Carmack's perspective is rooted in practical experience, reflecting a common sentiment in software development circles.

Analysis

Carmack's insights resonate deeply within the software engineering community, particularly among those who may be new to the field. His warning against over-engineering serves as a reminder to prioritize current project requirements and avoid unnecessary complexity, which can lead to wasted resources and time.

Conclusion

IT professionals should consider adopting the YAGNI principle in their development processes, focusing on immediate needs rather than speculative future requirements to enhance efficiency and effectiveness in software projects.