{
  "schema_version": "1.0",
  "id": "world-changing",
  "name": "While You Were Watching — user-timed world-change experiment",
  "description": "A user-controlled Start and Stop experiment that models eight global changes over a selected duration. Shared links store only duration and model version in the URL.",
  "page_url": "https://dynamicfacts.org/world-changing.html",
  "data_url": "https://dynamicfacts.org/data/world-changing.json",
  "languages": [
    "en",
    "es",
    "zh",
    "hi",
    "ar",
    "fr",
    "pt",
    "ru",
    "de",
    "ja"
  ],
  "indicator_type": "user-timed modelled interpolation",
  "unit": "mixed units",
  "reference_period": "latest source periods used by the linked DynamicFacts services",
  "updated_at": "2026-10-15",
  "primary_sources": [
    "https://data.worldbank.org/",
    "https://www.radicati.com/",
    "https://blog.google/products/ads-commerce/google-search-ai-brand-discovery/",
    "https://www.unesco.org/reports/wwdr/en/2025/download",
    "https://www.unep.org/resources/global-waste-management-outlook-2024",
    "https://www.sipri.org/publications/2026/sipri-fact-sheets/trends-world-military-expenditure-2025"
  ],
  "methodology_url": "https://dynamicfacts.org/methodology.html",
  "terms_url": "https://dynamicfacts.org/terms.html",
  "note": "Results equal the selected duration multiplied by average model rates. Natural population increase is rendered as displayed births minus displayed deaths, so the visible identity is exact.",
  "model_version": 2,
  "maximum_shared_duration_seconds": 86400,
  "rates_per_second": {
    "births": 4.239271549612603,
    "deaths": 1.9670165011468896,
    "population": 2.2722550484657136,
    "emails": 4542824.074074074,
    "searches": 158548.95991882292,
    "water": 126839.16793505834,
    "waste": 66.59056316590564,
    "military": 91546.16945712836
  },
  "legacy_models": {
    "1": {
      "status": "existing links are accepted and recalculated with the current consistent model",
      "original_rates_per_second": {
        "births": 4.239271549612603,
        "deaths": 1.9670165011468896,
        "population": 2.363247399797057,
        "emails": 4542824.074074074,
        "searches": 158548.95991882292,
        "water": 126839.16793505834,
        "waste": 66.59056316590564,
        "military": 91546.16945712836
      }
    }
  }
}