If you push out the whole distribution of child births, some of those would-be child births will not happen. Female fertility falls rapidly after 35[1]. It's no

If you push out the whole distribution of child births, some of those would-be child births will not happen. Female fertility falls rapidly after 35[1]. It's not something you can simply delay across the population and expect to get the same total reproduction rate. People will have fewer kids than they otherwise would have. [1] https://en.wikipedia.org/wiki/Age_and_female_fertility#Quantification_of_effect https://en.wikipedia.org/wiki/Age_and_female_fertility#Quant...