Fernandez-Villaverde says he goes to each country's national statistical agency's website, and uses their numbers for births and deaths and population, and computes fertility and replacement rate, and the trajectory of population for each country from that.
He says he has no idea where the UN gets its numbers, despite asking several times. He is a professor of economics and demography, so he's not going to just make stuff up.
Comments
Everyone needs to read the section about demographic data.
Big claims:
- The United Nations is systematically over-estimating fertility. (Table A1)
- The United Nations is assuming inplausible fertility rebounds (B.2)
- The world is already below the replacement rate. (B.4)
- The world population will peak in 30 years.
He has been saying this in his lecture "Demographic Future of Humanity" which you can find on YouTube, but now we have finally have the paper.
We need to make this common knowledge.
Fernandez-Villaverde says he goes to each country's national statistical agency's website, and uses their numbers for births and deaths and population, and computes fertility and replacement rate, and the trajectory of population for each country from that.
He says he has no idea where the UN gets its numbers, despite asking several times. He is a professor of economics and demography, so he's not going to just make stuff up.