# Specifications Index > **Specs are pre-implementation artifacts** — what you *planned*. They capture conceptual design > intent, high-level decisions, and the "why" behind features. Specs are human-curated, > flat in structure, and deliberately size-controlled for quick reading. > > Contrast with [`docs/memory/index.md`](../memory/index.md): memory files are *post-implementation* — > what actually happened. Memory files are the authoritative source of truth for system behavior, > maintained by `/fab-continue` (hydrate). > > **Ownership**: Specs are written and maintained by humans. No automated tooling creates or > enforces structure here — organize files however makes sense for your project. | Spec | Description | |------|-------------|