Copilot works even if both parties are behind firewalls, and it allows for Mac-Windows remote assistance as well as Mac-Mac and Windows-Windows. This means, I think, that it could save publishers from problems like this:
Mr. Eliot's Sunday Morning Service, 2nd stanza, first from Bartleby's with some Greek in the Greek alphabet--
|In the beginning was the Word.||5|
|Superfetation of τὸ ἒν,|
|And at the mensual turn of time|
|Produced enervate Origen.|
|5 In the beginning was the Word.|
|6 Superfetation of to en,|
|7 And at the mensual turn of time|
|8 Produced enervate Origen.|
We-e-e-e-e-e-e-e-l-l-l-l-l. Up to a point.
The sound that in English is normally represented by h does not have a letter in ancient Greek. It's written as a fiddly little inward-curving hook above the vowel. Any word that begins with an aspirated vowel (a rough breathing) will have this fiddly hook above the letter. Sadly for the modern typesetter, any word that begins with an unaspirated vowel also has a fiddly little hook -- a fiddly little hook facing the other way.
So if we were writing English words in the Greek alphabet, they'd look like this:
You'll notice just how big the Greek has to be for the direction of the hook to be clear. (Note also that the breathing goes over the second vowel of a two-vowel syllable.) And a syllable may also bear an accent:
The feminine singular of 'one' is μία, and the neuter singular is either
Long story short, the Greek for 'the One' is either τὸ ἕν or τὸ ἓν, which should be transliterated as, yes, you guessed it, to hen. If the comma at the end of the line is correct, both the accent and the breathing are wrong. And, to get back to extremely fabulous Mr Spolsky, if the typesetter had had a Hellenist with Copilot at the other end of the line, the word could have been printed right for the princely sum of $4.95, and we would not have had misinformation disseminated to millions of Internet users, to the effect that 'to en' is Greek for 'the One'.
It would be silly for a production manager to trawl the pool of typesetters for one who happened to know Greek because a text happened to include a couple of words in Greek. It would not be silly to lay out $4.95 to get someone competent in the language to input the couple of words. The alternative is for the hapless typesetter to have a bash and then fax the page through to the author for proofreading. The fiddly bits that are hardest to get right are precisely the bits that will be illegible in a fax. Copilot, thou shouldst have been living at that hour.
Information on Copilot is available at www.copilot.com.