The post introduces 'East Coast Vibing', a disciplined software development approach that contrasts with 'vibe coding' popularized by Andrej Karpathy. The author describes using two large language models (LLMs) for co-development: one as a high-level architect ('general contractor') and the other for coding ('code monkey'). The author emphasizes the importance of detailed prompt generation, technical debt management, and the necessity to refactor towards functional programming to maintain code quality. The method is presented as a more rigorous alternative to casual coding practices.