From b365baffa5dacf55659726e4984f0ed9ea302861 Mon Sep 17 00:00:00 2001 From: otivm Date: Tue, 28 Apr 2026 07:59:00 +0000 Subject: [PATCH] Add research brief for Roman venture scenarios (ChatGPT instruction document) --- .../research-brief-roman-venture.md | 235 ++++++++++++++++++ 1 file changed, 235 insertions(+) create mode 100644 docs/architecture/research-brief-roman-venture.md diff --git a/docs/architecture/research-brief-roman-venture.md b/docs/architecture/research-brief-roman-venture.md new file mode 100644 index 0000000..217bae8 --- /dev/null +++ b/docs/architecture/research-brief-roman-venture.md @@ -0,0 +1,235 @@ +# Research Brief — Roman Commercial Venture +### For: ChatGPT research sessions +### Purpose: Extract historically grounded parameters for OTIVM and CIVICVS simulation +### Date: 2026-04-28 + +--- + +## 0. Before you begin — read this + +This brief is for a simulation project, not a game with Roman aesthetics. +Every parameter you produce will be encoded into a database and used to govern +the behaviour of a historically grounded world model. Precision is not optional. +Vagueness is actively harmful. + +**The standard for every claim you make:** +- It must be traceable to a named, datable source — archaeological record, + primary text, epigraphy, or peer-reviewed scholarship. +- It must be scoped to a specific period, region, and social context. + "Romans used mules" is not useful. "A laden mule on the Via Appia in the + first century BCE could carry approximately X kg at Y km per day under + conditions Z" is useful. +- Where exact figures are unavailable, give a defensible range with the + reasoning behind it. Do not invent precision. Do not smooth uncertainty + into false confidence. + +**On Latin terminology:** +Use the Latin term wherever it is academically defensible. Do not default to +English equivalents that lose information. If a Latin term carries meaning +that English cannot carry in a single word, use the Latin and explain it. +The project uses CIVICVS rather than "civic duty" for exactly this reason — +the Latin is denser, more precise, and scoped to its period in a way that +the English is not. Apply this standard throughout your responses. + +Write Latin in CAPITALS where the term is being introduced as a canonical +token. Once established, mixed case is acceptable in prose. + +--- + +## 1. Context + +The simulation models a MERCATOR — a Roman merchant — operating in approximately +14 BCE, in the western Mediterranean. The merchant begins in Ostia with 50 +denarii and a single CODEX ACCEPTI ET EXPENSI (account book). He conducts +NEGOTIA (commercial ventures) along overland and maritime routes. + +The five locations in scope for the first research phase: + +| Token | Latin | Modern location | Character | +|---|---|---|---| +| OSTIA | Ostia | Ostia Antica, Lazio | Port at the mouth of the TIBER. Primary import/export hub for Rome. | +| CAPVA | Capua | Santa Maria Capua Vetere, Campania | Major inland market city. Via Appia junction. | +| BRVNDISIVM | Brundisium | Brindisi, Puglia | Adriatic port. Eastern trade gateway. End of the Via Appia. | +| CARTHAGO | Carthago | Tunis, Tunisia | North African trading centre. Grain, linen, dyes. | +| ALEXANDRIA | Alexandria | Alexandria, Egypt | Eastern Mediterranean hub. Grain, luxury goods, knowledge. | + +--- + +## 2. The NEGOTIVM — what we need to understand + +A NEGOTIVM (commercial venture) is not a single act. It is a chain of +discrete ITINERA (legs), each with its own mode, personnel, time, cost, +cargo constraint, and failure profile. + +For each of the four routes below, describe the complete chain of ITINERA +from origin warehouse to destination market. For each ITER (leg): + +**2.1 Mode of transport** +- What moved the cargo? IUMENTUM (pack animal — specify species and breed + where known), PLAUSTRUM (cart — specify type), NAVIS (vessel — specify + type: ACTUARIA, ONERARIA, CORBITA, etc.), human porterage (BAIULI). +- What was the road or waterway? Named where possible (Via Appia, Via Ostiensis, + Mare Tyrrhenum, etc.). Surface condition, seasonal constraints. + +**2.2 Cargo unit** +- What was the standard unit of cargo for this good on this leg? + AMPHORA (specify type: Dressel 1, Dressel 20, etc. — these are not + interchangeable), MODIVS (dry measure), TALENTVM, LIBRA. Give weight + and volume where known. +- What was the maximum load per transport unit (mule, cart, vessel)? +- What was the practical load — accounting for personnel provisions, + equipment, and the tendency to under-load to reduce spoilage and + breakage risk? + +**2.3 Personnel** +- Who was required? The MERCATOR himself, a FACTOR (agent — resident at + destination or travelling with the cargo?), BAIULI (porters), MULIONES + (muleteer — one per how many animals?), NAVARCHUS (ship captain), + NAUTAE (sailors — how many per vessel type?), CUSTODES (guards — under + what conditions were they necessary?). +- Who was slave (SERVUS), free hired (MERCENNARIUS), or contracted + (specify the Roman contractual form where known: LOCATIO CONDUCTIO + OPERARUM, LOCATIO CONDUCTIO OPERIS)? +- What did each cost per day, per leg, or per NEGOTIVM? + +**2.4 Time** +- Elapsed time from origin warehouse to destination market. Not sailing + time — total time including: loading (ONERATIO), waiting for weather + or convoy (MORA), transit, customs inspection (PORTORIUM), unloading + (EXONERATIO), and market negotiation. +- Seasonal variation. The MARE CLAVSVM (closed sea season, roughly + November to March) is the hard constraint for maritime legs. What + happened to overland legs in winter? In summer heat? + +**2.5 Cost** +- PORTORIUM (customs duty) — rate and collection point. The Roman + customs system was farmed to PUBLICANI. Rates varied by region and + good. Give the rate where known, the range where uncertain. +- VECTVRA (freight charge) — per unit of cargo, per leg. +- Personnel costs — daily rates or per-NEGOTIVM fees. +- Incidental costs — harbour fees, warehouse rental (HORREUM), road + tolls, bribes where documented. +- Total cost as a percentage of cargo value where scholarly estimates exist. + +**2.6 Failure modes** +- What could go wrong on this leg, and how often did it? +- NAUFRAGIVM (shipwreck) — frequency estimates from archaeological + record (Mediterranean wreck distribution is well documented). +- Theft (FVRTVM) — on road versus at sea versus in warehouse. +- Spoilage — what goods were vulnerable on which legs? Olive oil in + summer heat. Wine in transit shock. Grain in damp holds. +- Price collapse at destination — how was the MERCATOR exposed to + market conditions he could not observe at departure? +- Personnel failure — illness, desertion, dishonesty of FACTOR. + +--- + +## 3. The four routes — research in this order + +### Route I — OSTIA to CAPVA +Primary good: olive oil (OLEUM), fish sauce (GARUM). +Character: Short overland leg. Via Ostiensis to Rome, then Via Appia +south to Capua. Well-maintained roads. High traffic, therefore lower +bandit risk but higher competition and toll exposure. +Research note: This route was so heavily trafficked that it is the best +documented of the four. Prioritise precision here — it sets the baseline +for all subsequent routes. + +### Route II — CAPVA to BRVNDISIVM +Primary good: Campanian wine (VINVM CAMPANIVM), wool (LANA). +Character: Via Appia, the entire length. The most famous road in the +Roman world. Overland only. Significant elevation change through the +Apennines. Seasonal variation is marked. +Research note: Focus on the mule train (AGMEN IVMENTORVM). How was it +organised? Who led it? What was the ratio of guards to cargo handlers? + +### Route III — BRVNDISIVM to CARTHAGO +Primary good: Adriatic grain (FRVMENTVM), amber (SVCCINUM). +Character: Maritime crossing of the Ionian Sea, then coastal navigation +to North Africa. The amber is not local — it arrived in Brundisium from +the north via intermediary traders. Document the amber's known provenance +chain and where the MERCATOR entered it. +Research note: The SVCCINUM provenance chain is of particular scholarly +interest. Trace it as far back as the evidence allows. This is the first +route that connects Roman commerce to pre-Roman and non-Roman worlds. + +### Route IV — CARTHAGO to ALEXANDRIA +Primary good: North African linen (LINVM), frankincense (TVS). +Character: Maritime, coastal, longest leg. North African coast eastward. +TVS originated far outside the Roman world — document the known +intermediary chain from Arabia to Carthage. +Research note: This route connects Roman commerce to the Arabian and +Indian Ocean trade networks. The MERCATOR at this point is the end +consumer of a supply chain that begins thousands of kilometres and +potentially thousands of years from Rome. + +--- + +## 4. OTIUM — the other half of the merchant's time + +OTIUM is not idleness. It is the deliberate withdrawal from NEGOTIVM for +the purpose of restoration, reflection, relationship-building, and civic +participation. Cicero wrote extensively on this. It was a moral and social +category, not merely the absence of work. + +Research the following: +- What did a Roman merchant of modest means actually do during OTIUM? + Not a senator's OTIUM — a working MERCATOR's OTIUM. +- What social obligations (OFFICIA) competed with OTIUM? Client + relationships (CLIENTELA), religious duties, guild membership + (COLLEGIUM — was the MERCATOR likely a member of one? Which?). +- What was the relationship between OTIUM and AVCTORITAS? How did + visible leisure — the right kind, in the right company — build + reputation and therefore future commercial opportunity? +- What did OTIUM cost? Not in money, but in opportunity. What + NEGOTIVM could not be conducted while the MERCATOR rested? + +--- + +## 5. Output format requested + +For each route and each ITER, produce a structured parameter table: + +| Parameter | Value | Unit | Confidence | Source | +|---|---|---|---|---| +| Transit time | X | days | high/medium/low/estimated | Author, Title, date or excavation reference | +| Cargo capacity per mule | X | kg | ... | ... | +| VECTVRA rate | X | denarii per amphora | ... | ... | +| PORTORIUM rate | X | % of cargo value | ... | ... | +| Crew size (NAVIS type) | X | persons | ... | ... | +| Shipwreck probability | X | per voyage | ... | ... | + +Follow each table with a prose note covering: what is well-attested, +what is inferred, what is genuinely unknown and why. + +The confidence column is mandatory. Do not suppress uncertainty. +A "low" confidence value honestly reported is more useful than a +"high" confidence value that conceals a guess. + +--- + +## 6. Sources to prioritise + +Primary sources (use where they give quantitative data): +- Cicero's letters (EPISTVLAE AD ATTICVM, AD FAMILIARES) — commercial + references are scattered but precise when present +- Digest of Justinian — commercial law, contract types, liability +- Diocletian's Edict on Maximum Prices (301 CE — later than our period + but gives relative price structures) +- Pliny the Elder, NATVRALIS HISTORIA — cargo weights, goods, routes + +Archaeological sources: +- Monte Testaccio amphora deposit, Rome — olive oil trade documentation +- Mediterranean shipwreck distribution (Parker 1992 is the standard reference) +- Pompeii and Herculaneum commercial records + +Secondary scholarship: +- Lionel Casson, *Ships and Seamanship in the Ancient World* (1971) +- Peter Garnsey and Richard Saller, *The Roman Economy* (1987) +- Nicholas Purcell on the Mediterranean trade system +- Willem Jongman on Roman economic history + +--- + +*Research brief — OTIVM / CIVICVS project* +*Every parameter produced becomes a database record. Precision is not optional.*