What do experienced practitioners say you should build with the AI first?

Experienced practitioners recommend building a spec first — writing down and agreeing on exactly what should be built before generating any code with AI — because vibe coding's biggest failure mode is discovering, only after a lot of code already exists, that everyone had a different idea of what 'done' meant.

A company logo or a launch-party plan are unrelated deliverables that have nothing to do with defining software requirements; they're distractors meant to sound superficially plausible while missing the actual point about clarifying what to build.

'Spec-driven' development flips the traditional bottleneck: once AI can generate code extremely fast, the slow part of a project stops being typing and becomes deciding precisely what you want — which is really the same shift that happened whenever any tool made execution dramatically cheaper and put more weight on planning and design.