Developers report feeling 20% faster with AI tools, yet METR research (July 2025) shows they're actually 19% slower. This 39-point perception gap explains why 84% AI adoption hasn't improved delivery timelines.

This talk presents Stream Coding, a documentation-first methodology validated through two git-verified production systems:

5Levels Intelligence Platform:
- 7 production-ready modules, 48 tested endpoints
- 1.5-day execution sprint following 5 weeks planning
- Traditional estimate: 4-6 weeks of coding

Preflight Check (Hackathon):
- Complete React app, 59 UI components, 8-hour hackathon
- Team of 3, 4.9 Lovable AI credits
- 3-minute generation, production-ready first deployment
- 2.5 hours upfront planning (strategy + docs combined)

You'll learn: why fast code generation doesn't equal fast projects, how complete specifications reduce debugging cycles dramatically, and quality gates that catch issues during development.

Full methodology: https://github.com/frmoretto/stream-coding