Simon Willison’s Weblog: Quoting Steve Krouse

Source URL: https://simonwillison.net/2025/Jul/30/steve-krouse/
Source: Simon Willison’s Weblog
Title: Quoting Steve Krouse

Feedly Summary: When you vibe code, you are incurring tech debt as fast as the LLM can spit it out. Which is why vibe coding is perfect for prototypes and throwaway projects: It’s only legacy code if you have to maintain it! […]
The worst possible situation is to have a non-programmer vibe code a large project that they intend to maintain. This would be the equivalent of giving a credit card to a child without first explaining the concept of debt. […]
If you don’t understand the code, your only recourse is to ask AI to fix it for you, which is like paying off credit card debt with another credit card.
— Steve Krouse, Vibe code is legacy code
Tags: vibe-coding, ai-assisted-programming, generative-ai, steve-krouse, ai, llms

AI Summary and Description: Yes

Summary: The text discusses the concept of “vibe coding,” emphasizing the risks associated with using AI-generated code in non-programmer hands. It highlights the potential for incurring technical debt rapidly and the challenges of maintaining legacy code that is poorly understood by the coder.

Detailed Description: The passage presents a critical perspective on “vibe coding,” a practice that involves relying heavily on AI, particularly Large Language Models (LLMs), for code generation. The author’s insights are vital for professionals concerned with AI security and the implications of generative AI usage in software development. Key points include:

– **Definition of Vibe Coding**: It suggests a casual, less disciplined approach to programming, where the focus is on quickly generating code via AI, often without a solid understanding of the underlying principles.
– **Technical Debt Accrual**: The metaphor of incurring tech debt emphasizes that while vibe coding may speed up development for prototypes or projects that are never intended to be maintained, it can lead to significant problems if the code is not properly understood or documented.
– **Risk of Poor Maintenance**: The analogy provided (giving a child a credit card) illustrates the dangers of allowing those without programming knowledge to engage in vibe coding, particularly for projects they plan to maintain long-term.
– **Dependency on AI for Fixes**: The text cautions against relying solely on AI to resolve coding issues, suggesting it equates to compounding technical debt rather than addressing the root problem.

Overall, the content serves as a cautionary tale for developers, managers, and security professionals who may be tempted to lean too heavily on AI tools without understanding their broader implications, particularly in the realms of information security and software security. The discussion raises important considerations regarding governance and the need for sound practices in both coding and maintenance to prevent vulnerabilities and ensure code quality.