It's part of the New Yorker's writing style. It is somewhat archaic. https://en.wikipedia.org/wiki/Diaeresis_(diacritic)#English https://en.wikipedia.org/wiki

It's part of the New Yorker's writing style. It is somewhat archaic. https://en.wikipedia.org/wiki/Diaeresis_(diacritic)#English https://en.wikipedia.org/wiki/Diaeresis_(diacritic)#English https://www.newyorker.com/culture/culture-desk/the-curse-of-the-diaeresis https://www.newyorker.com/culture/culture-desk/the-curse-of-...