The New Yorker's Obscure Punctuation Marks: Diaereses vs. Umlauts

A viral article about The New Yorker's use of diaereses sparked a discussion about the difference between diaereses and umlauts. The article explains that The New Yorker uses diaereses in words like "coöperate" to indicate that the two vowels should be pronounced separately, not as a diphthong. However, diaereses and umlauts look similar but serve different purposes: diaereses separate adjacent vowels, while umlauts indicate a change in vowel pronunciation. The article traces the origins of both marks, explains their usage in English and German, and explores how the umlaut sound change has affected the spelling and pronunciation of English words. It concludes with a humorous summary of the differences between diaereses and umlauts, and reveals the historical and cultural reasons behind The New Yorker's continued use of diaereses, despite reader complaints.