The weaknesses of Microsoft Word's grammar checker are by now well known, via Sandeep Krishnamurthy's eye-opening demonstration. And the inherent weaknesses of any spellchecker should be obvious: the inability to distinguish between their and there, for instance, or to know that proof read should be written as proofread. Yesterday I found a further glitch when reading over a document: Word's spellchecker didn't flag the typo ands.
According to the online Oxford English Dictionary, ands is a word, at least sort of. AND, always in all caps, is a transitive verb, meaning "to combine (sets, binary signals, etc.) using a Boolean AND operator." Sample OED sentence: "The program for plot ANDs X with 7." It's also conceivable that someone might pluralize the conjunction: "This sentence uses too many ands." But wouldn't it make better sense to omit ands from Word's standard dictionary and allow users of Boolean operators to add the word to a custom dictionary? Just asking.
As my wife Elaine Fine has pointed out to me, Word's spellchecker also recognizes Julliard as correct. But the music school is Juilliard. The spellcheckers in both AbiWord and the Writer component of OpenOffice.org let ands go by, but they both flag Julliard as misspelled. Both programs are freeware, which in this case means that you get what you don't pay for--greater accuracy in spelling.