Explanation here: https://www.newyorker.com/culture/culture-desk/the-curse-of-the-diaeresis https://www.newyorker.com/culture/culture-desk/the-curse-of-... > [

Explanation here: https://www.newyorker.com/culture/culture-desk/the-curse-of-the-diaeresis https://www.newyorker.com/culture/culture-desk/the-curse-of-... > [...] we have three options for these kinds of words: “cooperate,” “co-operate,” and “coöperate.” Back when the magazine was just getting started, someone decided that the first misread and the second was ridiculous, and adopted the diaeresis as the most elegant solution with the broadest application.