a decade later and still its not right

I remember making fun of MS Word's spelling and grammar checker, back in the days when it first came out. My best friend and I spent several hours one afternoon just typing in words and giggling at the suggested corrections. The only one I can recall now was our home town of Ilkley, which yielded alkali - for some reason that sent us into paroxysms of laughter (well, we were 13 - pretty much everything sent us into paroxysms of laughter).

It's not as if Microsoft hasn't had the time or the resources (new!Solitaire). How does Word still do things like this?