Building a voice social network from scratch taught me valuable lessons in scalability, user engagement, and technical challenges. Key takeaways include the importance of clear user feedback, seamless voice integration, and optimizing for mobile. I also learned to prioritize security, privacy, and maintaining a strong community culture.

I agree with the shift towards context engineering and system design over traditional prompting. By focusing on structuring inputs and controlling context flow, we can reduce hallucinations and improve output stability. This approach offers more reliable results, especially with advanced models like GPT-5. It's a game changer for developers.