Oooh, serendipity! I was considering asking about diaereses in English and why they’ve been disappearing.
As a kid, I was taught that
[ul]
[li]when a diaeresis appears on the second of two vowels, it indicates that the paired vowels are not a diphthong, and[/li][li]it’s almost impossible to use a diaeresis in English without seeming affected and self-serious. [/li][/ul]
As a deeply fancy person, the second point—while true—doesn’t bother me at all. But as a reader, I appreciate getting a signal that a given set of vowels isn’t a diphthong. Without a diaeresis, the pronunciation of cooperation is utterly irregular: English phonics dictates that oo is pronounced ooh.
A reader—especially one who’s not a native English speaker—is simply expected to know/memorize the fact that the pronunciation of cooperation is irregular. A native speaker may well know that the word started out as co-operation and got shortened, but that sort of knowledge disappears with time and familiarity.
Even a native speaker who hasn’t encountered naïve before could find the diaerisis a helpful pronunciation hint, and the proper names Zoë and Chloë seem to have kept their diaerises longer than coöperation has, possibly for pronunciation reasons.
English spelling and pronunciation are only loosely correlated already, so I’m a little sad to lose the diaeresis and the dollop of phonetic consistency it supplies. In a language where bomb, comb and tomb don’t rhyme, I’m inclined to keep any tools we have for making pronunciation clearer and more consistent. (My pedantic quirks won’t slow the death of coöperation, of course).
Besides, we fudge non-diphthongs into diphthongs all the time. Take zoology, for instance. Most people pronounce it as though it were spelled “zoo-ology” even though English phonics dictates a pronunciation that rhymes with eulogy. The correct pronunciation, of course, rhymes with, uh, “dough-ology”. This is because the term comes directly from the Greek[sup]1[/sup] ζῷον, in which the omega and omicron describe two different vowel sounds. English represents both phonemes with the single Latin letter O, which makes the pronunciation ambiguous.
I think zoölogy would be a beautiful word, but Google Ngram shows that despite a popularity spike in 1905, zoölogy has never been a common spelling, especially compared to plain-Jane zoology.
I don’t care how anyone else pronounces the word, but I pronounce zoology to rhyme with “dough-ology.” This gratifies some people (zoologists and fellow pedants, mostly) and astonishes the rest (due to the wacky affectation). It’s a lost cause, just like coöperation.
The demise of the diaerisis in English is likely due to the inevitable streamlining and dynamicism of language, but I’d like to think it’s also a rejection of the arbitrary and hideous metal umlaut.
[sup]1[/sup]This isn’t common knowledge for the same reason that the evolution of co-operation won’t be common knowledge in the future).