How We Know Book I · Imperium Romanum

Annalistic Tradition (Grades B–C)
- Livy and his lost predecessors
  - Livy wrote under Augustus, three centuries after the Gallic catastrophe
  - Relied on lost annalists like Fabius Pictor, Antias, and Quadrigarius
  - Tier 2 narrative provides structural framework but unprovable battle details
- Annalistic distortion and doublets
  - Annual accounts multiply unverified Roman triumphs and consular victories
  - Battle casualty counts reflect late annalistic inflation rather than fact
  - Camillus gold recovery invented to deny ransom was paid
- Contemporary Greek counter-tradition
  - Polybius preserves sober third-century account omitting Camillus rescue (BGrade B)
  - Hieronymus of Cardia had direct access to Pyrrhus memoirs (AGrade A)
  - External sources expose Roman literary improvements after major defeats
Antiquarian Survivals (Grades A–B)
- Fasti and official records
  - Fasti Triumphales confirm consular triumph records for 298 and 275 (AGrade A)
  - Annual magistrate lists fix consular college sequence despite missing narratives
  - Dies Alliensis calendar entry verifies indelible memory of 390 BC disaster
- Religious formulas and ritual memory
  - Archaic devotio formula preserved verbatim through Festus and pontifical tradition
  - Annual state sacrifices at Rome commemorate Decius Mus at Sentinum
  - Juno Moneta temple cult attests historic Capitoline defense against Gauls
- Institutional and juridical memory
  - Caudine treaty repudiation debated as legal precedent in Cicero (BGrade B)
  - Latin Settlement categories of 338 BC persisted in later administrative law
  - Lex Genucia reforms of 342 BC corroborate army mutiny crisis
Archaeology and Epigraphy (AGrade A)
- Contemporary epigraphic witnesses
  - Scipio Barbatus sarcophagus elogium confirms 298 BC Samnite campaign (AGrade A)
  - CIL inscriptions verify third-century colonial foundations at Paestum and Beneventum (AGrade A)
  - Provides rare contemporary documentation independent of Roman literary bias
- Physical fortifications and roads
  - Servian Wall cappellaccio ashlar dates archaeologically to early fourth century BC
  - Extant stretches of Via Appia substantiate 312 BC strategic consolidation
  - Physical colony circuits demonstrate permanent demographic control of conquered territories
- Ambiguous destruction horizons
  - Destruction horizon at Rome for 390 BC remains archaeologically ambiguous
  - Material record divides scholars between minimalist and maximalist sack interpretations
  - Excavations cannot corroborate the traditional seven-month Capitoline siege
Later Back-Projection (Grades C–D)
- Family-historical embellishment
  - Gens Manlia and Fabia invented partisan martial exploits (CGrade C)
  - Torquatus collar and Corvinus raven represent noble family folklore
  - Three generations of Decian devotiones reflect annalistic doublet accretion
- Exemplary moral tableau construction
  - Senators awaiting death on ivory chairs is Stoic moral tableau
  - Geese of Juno and vae victis mythologize humiliating Gallic ransom
  - Late Republic retrojected mos maiorum ideals onto archaic commanders
- Tactical retrofitting
  - Manipular legion evolution retroactively attributed to Camillus as single reformer
  - Allia tactical narrative reflects later tactical theory rather than records
  - Lost mountain battles reconstructed as formal Hellenistic set-pieces

I-M03 · generated by the Imperium factory studio (gemini-3.8-flash) from Book I under the House Preamble.