{
  "schema": "vedokrok.public-item.v1",
  "release_id": "MHC-RPUB-20260920-75ad787a",
  "url": "/knowledge/show-the-delta-when-a-requirement-changes",
  "id": "MHC-D-RESEARCH-0613",
  "version": "0.1.0",
  "title": "Show the delta when a requirement changes",
  "summary": "Change communication should reveal the change.",
  "kind": "protocol",
  "body": "State the previous rule, the new rule and why the change matters. For structured data, highlight changed fields rather than resending an unmarked full artifact. Name effective timing and whether previous work must be revised.",
  "limits": [
    "Keep formal change-control rules where required; a readable delta does not replace approvals or traceability."
  ],
  "topics": [
    "union-actionable-async-writing"
  ],
  "intents": [],
  "source_ids": [
    "RS-B843492FBF1442AD"
  ],
  "evidence": [
    {
      "claim": "CDC clear-communication guidance recommends one obvious main message, placing it early and including a clear action for the audience.",
      "source_id": "RS-B843492FBF1442AD",
      "role": "supports",
      "note": "Complex work can require several actions, but the communication still benefits from a dominant purpose.",
      "locator": "Core items 1, 2 and 5"
    },
    {
      "claim": "CDC guidance recommends lists, chunks and descriptive headings to make information easier to scan and organize.",
      "source_id": "RS-B843492FBF1442AD",
      "role": "supports",
      "note": "Very short messages may not need headings; structure should match complexity.",
      "locator": "Core items 8 through 10"
    }
  ],
  "use_when": [
    "A thread says 'updated requirement' but readers must compare old and new text manually."
  ],
  "avoid_when": [
    "Keep formal change-control rules where required; a readable delta does not replace approvals or traceability."
  ],
  "example": "'Delivery block: blank → ZM for scope X; effective for Monday load; regenerate batch file only.'",
  "check": "A reader can identify what changed without diffing two long documents.",
  "steps": [
    "A reader can identify what changed without diffing two long documents."
  ],
  "sources": [
    {
      "id": "RS-B843492FBF1442AD",
      "title": "Description and Examples of Index Items",
      "url": "https://www.cdc.gov/ccindex/tool/description-examples-parta.html"
    }
  ],
  "relations": [],
  "collections": [
    {
      "id": "RC-ECF674DEF65C9DAB",
      "title": "Write asynchronous messages that can be acted on without a meeting",
      "url": "/collections/write-asynchronous-messages-that-can-be-acted-on-without-a-meeting"
    }
  ]
}