Computing History Benchmark

{
  "challenge_id": "AIBRC-006",
  "title": "Computing History Benchmark",
  "project_type": "independent_demonstration",
  "research_domain": "Computing and Network History",
  "difficulty": "advanced",
  "question": "In 1969 a student programmer in Los Angeles transmitted the first characters to a host at a research institute several hundred miles north, at 10:30 pm local time. On what date, in local Pacific time, did that transmission take place?",
  "accepted_answers": [
    "29 October 1969"
  ],
  "answer_type": "short_text",
  "answer_normalisation": {
    "case_sensitive": false,
    "ignore_punctuation": true,
    "accepted_variations": [
      "29 October 1969",
      "October 29, 1969",
      "29/10/1969",
      "1969-10-29"
    ]
  },
  "clues": [
    {
      "clue_id": "C01",
      "fact_type": "date",
      "statement": "The first interface message processor was installed at a Los Angeles university in September 1969.",
      "constraint": "Fixes the network and the year while excluding the answer month.",
      "source": "Internet Society — Brief History of the Internet",
      "locator": "Paragraph beginning “All this came together in September 1969…”",
      "status": "verified"
    },
    {
      "clue_id": "C02",
      "fact_type": "organisation",
      "statement": "By the end of that year four host computers were connected into the initial network.",
      "constraint": "Confirms the network without naming the first transmission.",
      "source": "Internet Society — Brief History of the Internet",
      "locator": "Same section",
      "status": "verified"
    },
    {
      "clue_id": "C03",
      "fact_type": "person",
      "statement": "The transmission was made between a student programmer at the Los Angeles site and a programmer at a research institute further north.",
      "constraint": "Two named individuals: Charley Kline and Bill Duvall.",
      "source": "Wikipedia — ARPANET",
      "locator": "Section on the first message",
      "status": "verified"
    },
    {
      "clue_id": "C04",
      "fact_type": "time",
      "statement": "The transmission is logged at 10:30 pm local Pacific time.",
      "constraint": "Distinguishes the local date from the UTC date, which falls on the following day.",
      "source": "Wikipedia — ARPANET",
      "locator": "IMP log caption",
      "status": "verified"
    },
    {
      "clue_id": "C05",
      "fact_type": "event",
      "statement": "The network was switched on in late October 1969.",
      "constraint": "Independent corroboration of the month from a museum timeline.",
      "source": "Computer History Museum — Timeline of Computer History, 1969",
      "locator": "1969 networking entry",
      "status": "verified"
    }
  ],
  "evidence": [
    {
      "evidence_id": "E01",
      "claim_supported": "The answer, and clues C03 and C04.",
      "source_title": "ARPANET",
      "issuing_organisation": "Wikipedia",
      "source_type": "Reference database",
      "url": "https://en.wikipedia.org/wiki/ARPANET",
      "publication_date": "Continuously edited article",
      "page_number": "n/a (web page)",
      "section": "First message and IMP log caption",
      "access_date": "4 September 2026",
      "reliability": "Medium-high — sourced encyclopaedia entry, corroborated below",
      "verification_status": "verified"
    },
    {
      "evidence_id": "E02",
      "claim_supported": "Clues C01 and C02 — the September installation and the four-host network.",
      "source_title": "Brief History of the Internet",
      "issuing_organisation": "Internet Society",
      "source_type": "Technical organisation",
      "url": "https://www.internetsociety.org/internet/history-internet/brief-history-internet/",
      "publication_date": "Standing history page",
      "page_number": "n/a (web page)",
      "section": "Initial Internetting Concepts / 1969",
      "access_date": "4 September 2026",
      "reliability": "High",
      "verification_status": "verified"
    },
    {
      "evidence_id": "E03",
      "claim_supported": "Clue C05 — independent corroboration of the month.",
      "source_title": "Timeline of Computer History — 1969",
      "issuing_organisation": "Computer History Museum",
      "source_type": "Museum record",
      "url": "https://www.computerhistory.org/timeline/1969/",
      "publication_date": "Standing timeline",
      "page_number": "n/a (web page)",
      "section": "Networking, 1969",
      "access_date": "4 September 2026",
      "reliability": "High — curated museum source",
      "verification_status": "verified"
    }
  ],
  "search_validation": [
    {
      "search_id": "S01",
      "query": "when was ARPANET created",
      "platform": "Google",
      "search_date": "4 September 2026",
      "relevant_results": "Returns 1969 and the September installation, not the transmission date.",
      "answer_exposed": false,
      "notes": "None — it lands on the decoy month. Kept as evidence that the obvious query misses."
    },
    {
      "search_id": "S02",
      "query": "first message sent over ARPANET date",
      "platform": "Google",
      "search_date": "4 September 2026",
      "relevant_results": "Exposes 29 October 1969 in the snippet.",
      "answer_exposed": true,
      "notes": "Direct wording search solves the task immediately. The question was rewritten to avoid 'ARPANET' and 'first message', describing the two sites and the log timestamp instead."
    },
    {
      "search_id": "S03",
      "query": "UCLA Stanford Research Institute host to host transmission 1969 programmer log",
      "platform": "Google",
      "search_date": "4 September 2026",
      "relevant_results": "Returns anniversary coverage and archival material; the day is confirmed only after opening a record.",
      "answer_exposed": false,
      "notes": "None — this is the intended path. Retained as the reference path."
    },
    {
      "search_id": "S04",
      "query": "ARPANET first message 30 October 1969 UTC",
      "platform": "Google",
      "search_date": "4 September 2026",
      "relevant_results": "Surfaces the alternative UTC date used by some accounts.",
      "answer_exposed": true,
      "notes": "Two defensible dates exist depending on the time zone. The question fixes local Pacific time, and 30 October 1969 is documented here as the near-miss rather than accepted."
    }
  ],
  "quality_checks": {
    "The answer is short and objectively verifiable.": true,
    "The answer is supported by an authoritative source.": true,
    "The question has only one defensible answer.": true,
    "No single clue directly exposes the answer.": true,
    "Each clue is independently checkable.": true,
    "The clue set spans multiple fact types.": true,
    "The task requires multi-step reasoning.": true,
    "Obvious searches have been documented.": true,
    "Search-result snippets do not reveal the answer.": false,
    "Sources are publicly accessible.": true,
    "Exact pages, tables or sections are recorded.": true,
    "The evidence chain can be reproduced.": true,
    "The question avoids subjective interpretation.": true,
    "The answer is stable over time.": true,
    "No fabricated evidence is included.": true
  },
  "researcher": {
    "name": "TMK Research Lab",
    "portfolio": "https://theophilusmorkporkpor.lovable.app",
    "email": "tkudjordjie@gmail.com"
  }
}