Ah, damn. I wish I could read their paper (article doesn’t mention a translation). That’s incredibly interesting!
From the article, it is because 1.83% of the population in Japan has a last name of Sato (and also I assume probably because of their low immigration). A law in Japan forces married women to take their husband’s name.
I wonder if there is a number like that for the US? Like if 10% of the population had a last name of Smith, would we all become Mr/Ms Smith after x years? Do all countries converge to a single name after a finite amount of years?
Will the whole world be Wang after x million years?
spoon-tamago.com
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