Birthgap
Birthgap (2023) Seen on the 26th May 2026, 105 min. Birthgap correctly identifies a real demographic transition: fertility has fallen, parenthood is being delayed, and many rich societies are ageing into historically unusual population structures. However, judged by the standards of demographic science, history of science, and causal inference, the documentary turns a valid demographic pattern into an overdetermined causal story. BirthgapFacts is right to challenge its strongest claims: the evidence does not justify treating unplanned childlessness as the central cause of low fertility everywhere, nor does it justify global “population collapse” language. The scientifically safer conclusion is that low fertility is a multi-causal demographic transition, not a single-cause crisis. 1. What Birthgap gets right: the phenomenon is real The documentary is not inventing the problem. Fertility decline in high-income societies is real and large. The OECD reports that the average total ferti...