[Flatus I. Maximus]

> Up to 42% of Japanese women born in 2005 could end up not having children in their lifetimes,

When else would they have them?

[alexander_busek]

Up to 42% of Japanese women born in 2005 could end up not having children in their lifetimes

When else would they have them?

Now you're being deliberately dense. (Or just having fun?)

A study could, conceivably, make predictions about the reproductive behavior of a group of people for a short span of time - say, for the next five years. This study instead makes predictions about their lifetime reproductive performance.

Regards,