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Code Writing Isn’t the Bottleneck—Understanding and Review Are

Challenges in code review, understanding, and collaboration remain primary bottlenecks.

From Hacker News Original Article Hacker News Discussion

Writing code itself has never been the main bottleneck in software development; instead, understanding, reviewing, and coordinating around code remain the biggest challenges. While large language models (LLMs) speed up code generation, they shift complexity toward ensuring trust, quality, and maintainability.

Why it matters: Faster code generation increases volume but raises challenges in verifying and understanding code effectively within teams.

The big picture: Software engineering bottlenecks lie in human coordination, knowledge transfer, testing, and debugging — not just writing code.

The stakes: Ignoring the complexity of review and trust risks lower code quality and slower overall progress despite faster coding.

Commenters say: Many agree writing code is the easiest part; the hardest issues are communication, legacy systems, and shared understanding.