Holy hell, the definition of "grammar" seems to get more people excited than I thought it would. I love you guys, seriously. In junior high my mom always told me that when I got out into the real world I would find more people like me, by which she very specifically meant "people who get completely agitated by issues of grammar and usage," and it really warms my heart that the existence of the internet has proved her right.
I'd like to clarify what was apparently a too-brief discussion of the difference between the adjectives "grammatical" and "ungrammatical," and why the existence of those two words precludes the existence of a particular type of qualified version of the noun "grammar." It is totally okay if you don't care about this and just skip on down to the comments in order to call me a fat bitch.
A friend (who wishes to remain anonymous due to the fact that I freaking schooled him when we were arguing this over google chat) went at the matter from the easiest point of entry: the analogy.
"Look," he said. "If you have a math test, and you get 30/100, it is fine to say 'poor math skills.' Even though the errors are not math, given that they're simply wrong: 2 + 7 = 10 is as much 'not math' as 'I is hungry' is 'not grammar.' When you say 'poor grammar' you mean that the person makes frequent grammar errors, and his overall language skill is poor."
Ah. Except that saying "poor math skills" is not analogous to saying "poor grammar." It is analogous to saying "poor grammar skills" - which is perfectly fine. In this case, "poor" and "grammar" are both modifying "skills," which is a noun that can take as many qualifying adjectives as you'd care to throw at it.
"Using grammar," on the other hand, is a lot like "being pregnant." Either there is a little parasitic clone chilling out in your uterus, or there is not. Either your verb agrees with your noun, or it does not. You can be happily pregnant. You can be exuberantly grammatical. But you can't have "partial pregnancy" the same way you can't have "poor grammar." For that matter, you also can't have "incorrect grammar," because grammar is – definitionally – correct.
But my friend kept pushing:
"I continue to think you are not just pedantic, but wrong. Using poor grammar strikes me as a perfectly acceptable way of saying 'makes many grammar errors.'" I unapologetically use this construction regularly."
As it happens, so do I (though I feel a little twinge whenever I do, so maybe it's not totally unapologetic usage). But that isn't the point. The point is that, despite its frequent use, it remains incorrect. Of course, odds are that it will probably evolve into correctness, but you know what? "Irregardless" is now an actual word in the dictionary. So the evolution of language doesn’t always go down the happy path towards sunshine. Saying something is correct merely because it is ubiquitous is the sort of thing that a blogger a bit more prone to straw-manning than I am might say leads us down a path towards genocide and Crocs as acceptable footwear and horribly ineffective democratically-chosen presidents. Oh wait.
"You are like the people who say SPLIT INFINITIVES ARE ALWAYS WRONG," said my friend, and I resisted the urge to quote the guy who inspired Dead Poets Society, and also the urge to point out that an infinitive, properly, is a single verb despite being two words, and splitting it is like saying "absofuckinglutely," and instead let him continue down his path.
"Your binary construction of 'grammatical' and 'ungrammatical' assumes that there are a fixed set of grammatical rules. That is not true; there are many rules that people disagree on."
He's right, of course. Issues of grammar, like issues of law or tennis or anything else for which there is a codified set of rules, are always up for dispute. But the existence of disputes doesn't render the entire system unsound, and doesn't disallow the possibility of saying of an action "that is illegal" the same way one says of a sentence "that is ungrammatical." I suppose it's worth noting at this point that my friend is a lawyer, so the point wasn't lost on him.
Beside being a lawyer, though, he is also a really smart guy. So he started from a new direction:
"Okay. If I say 'poor grammar,' you know what I'm talking about. If the concept of poor grammar exists, then there's no problem with the construction 'poor grammar,' right?"
Well, yes and no. Here we get into interesting Frege-trailblazed territory. (Fun fact: I used to have a t-shirt that said "Gottlob is my boyfriend." Then an actual boyfriend borrowed it, and broke up with me, so the status of my relationship with Gottlob is currently in question.)
If a concept exists, it can be given a name. Let's call the concept "poor grammar," which - regardless of its grammaticality - we all comprehend, "P."
"P" can be replaced with anything. "Thistle." "Uskvald the Hirsute." "Asdgsdds25sd." "Poor grammar." It's simply a name applied to a concept - a handle which, when said or written, immediately allows all of us to conjure its concept in our minds.
The problem with calling "P" "poor grammar" is that "grammar" is not a word devoid of connotation, and so using it in the name of another thing creates reference to its own meaning. And, going back to the pregnancy analogy, "poor grammar" is simply not a meaningful phrase. Not "not meaningful" in the sense of "incomprehensible"; rather, "not meaningful" in the sense of "a computer given the rules of English would be unable to parse this sentence successfully."
"Fine," said my friend. "Disregard that argument. I am suggesting that grammar is subjective and therefore that it is coherent to refer to 'poor grammar' in the same sense as it is coherent to refer to 'poor art'"
Well as it happens, I actually think there is a case to be made for "poor art" also being a meaningless concept. But that’s another issue for another time.
The final point of all this, I think, is that I was really making a quite trivial point. I don't believe anyone would contradict that a given sentence is either grammatical or ungrammatical. The extension of this notion that's getting everyone's undies in bunches is the truthful fact that given a binary situation, you can't express middle ground and allow the expression to remain binary.
You may now proceed with calling me a fat bitch. Thank you.