Seven Teams, One Vision

TL;DR: Seven teams built an AI-driven audio product in three days. AI agents didn’t replace human collaboration — they amplified individual speed, shifting the bottleneck to coordination and integration. Vibe coding works for UIs and exploration; spec-driven approaches win at integration boundaries. The architectural lesson: humans own the interfaces, agents own the interiors. Participants estimated 3 days = 3 months of normal elapsed time, though that compresses prototyping time, not production delivery.