[
  {
    "view": "regular births",
    "measurement": "effective begetting rows + licensed placements",
    "retains": "b and local bindings",
    "forgets": "r when b held"
  },
  {
    "view": "regular theoretical deaths",
    "measurement": "birth \u2212 [Q(b)+Q(r)]",
    "retains": "rounded component partition",
    "forgets": "discarded residuals unless saved"
  },
  {
    "view": "cumulative",
    "measurement": "lifespan suffix sums + terminal",
    "retains": "L and ordered path",
    "forgets": "b/r partition when L held"
  },
  {
    "view": "Rounded cumulative",
    "measurement": "Q(L) suffix sums + terminal",
    "retains": "rounded ordered L",
    "forgets": "e unless saved"
  }
]