{
  "title": "Road 2 model: population figures, births by block and one-number tests",
  "description": "World population figures used by Road 2, births computed for each block, and tests that change one number at a time. Population figures are single values from HYDE 3.3, Gapminder v7 and UN WPP 2024 via Our World in Data, with upstream not traced back. Births before 1950 are model results, not counts.",
  "license": "CC BY 4.0",
  "license_url": "https://creativecommons.org/licenses/by/4.0/",
  "creator": "The What-If Observatory",
  "page": "https://whatifobservatory.com/estimates/how-many-people-have-ever-lived/",
  "derived_from": [
    "PRB 2022",
    "OWID (HYDE 3.3, Gapminder v7, UN WPP 2024)"
  ],
  "method": "Compiled by The What-If Observatory from the data listed",
  "data_credit": [
    "OWID (HYDE 3.3, Gapminder v7, UN WPP 2024); upstream via Our World in Data not traced back"
  ]
}