Babel Bible

A self-study curriculum spanning the sciences and humanities. Math, physics, chemistry, biology, philosophy, language, and the social world — same concept, three depths:

• Beginner — intuition, visuals, worked examples.
• Intermediate — formal definitions, proofs, exercises.
• Master — graduate-level depth with primary-source citations and Lean formalisation where Mathlib covers.

Live at https://babelbible.org — ~2,559 units across 50 sections (~360 chapters), every produced unit passing a 27-point automated rubric.

Codename: the Lean formalisation library and internal docs still use the codename Codex. Babel Bible is the product name.

Layout

babel-bible/
├── README.md                 ← you are here
├── AGENTS.md                 ← agent + contributor entry point
├── OVERVIEW.md               ← the load-bearing project doc
├── content/                  ← curriculum units (~2,559 markdown files, 50 sections)
├── lean/                     ← Lean 4 formalisation (library root: `Codex.*`)
├── site/                     ← Neutron-based site → babelbible.org
├── docs/                     ← specs, briefs, catalogs, plans
├── plans/                    ← expansion state, audits, finalization queue
├── manifests/                ← per-unit state, dependency DAG, campaign log
├── lenses/                   ← lens/filter system (curriculum views)
├── _meta/, style/            ← notation + editorial voice
├── scripts/                  ← validators + content tooling
└── reference/                ← local archive of external sources (gitignored)

Pipeline

1. Spec (docs/specs/UNIT_SPEC.md) declares the unit format and rubric.
2. Produce — content agents draft units that pass the 27-point automated rubric (scripts/validate_unit.py).
3. Integrate — cross-references validated at build time; broken refs fail the build.
4. Site — Neutron generates static HTML; deployed to OVH via Teploy.
5. Audit — per-section coverage/gap audits under plans/expansion/.

Three tiers

Each unit packs Beginner / Intermediate / Master content in a single source file. Section markers ([Beginner], [Intermediate+], [Master]) gate visibility. The tier toggle in the site header changes what the reader sees.

Lean formalisation

The Lean 4 library lives in lean/ (module root: Codex.*). Each Master-tier unit declares a lean_status of full, partial, or none. Mathlib coverage gaps surface in docs/catalogs/MATHLIB_GAPS.md as contribution candidates.

Site

Built with Neutron — single static-site target served by Caddy. Local dev: cd site && npm run dev. Production: npm run build, deploy with teploy deploy (config in site/teploy.yml).

Next-step references

• AGENTS.md — entry point: full doc map and reading order (includes a consolidated Current state section).
• OVERVIEW.md — the canonical project doc; read this when in doubt.
• docs/specs/UNIT_SPEC.md — the unit format.
• docs/specs/QUALITY_RUBRIC.md — the 27-point automated checks.
• plans/expansion/FINALIZATION_PLAN.md — the live production queue.

License

Dual-licensed:

• Code (lean/, scripts/, site/) — MIT, see LICENSE.
• Curriculum content (content/) — Creative Commons Attribution-ShareAlike 4.0 (CC-BY-SA-4.0), see LICENSE-content.md.