Pages does not have a "proofreader"
Nor should it, or indeed any other text preparation / type publication software. Checking spelling is one thing, checking syntax and semantics is something another thing altogether.
Ten years walking the highways and byways of W's 'Philosophische Untersuchungen' and sundry subsequent publications suggests that what we would call being language or making sense is a bit more than what we would call well-formed syntax. Linguists have a hard time with the idea that their field is properly a part of ethnography/anthropology. Computational linguists have a still harder time selling to this signature the stuff they say they support -:).
/hh
