Question: Hey, I’m just wondering- and totally not in a sarcastic/condescending way- from a linguists perspective, if there’s no “wrong” usage of words or grammar, why have rules at all? Are there any that matter? Just wanted to get your views on it.
Answer: Linguists really do vary, and most are not as pigheadedly anti-prescriptivist as I am. =) But, from my perspective, we don’t need rules at all. English survived for quite a while before people started writing down the rules to it, and there are many societies around the world still today that don’t actively enforce linguistic rules.
There’s a huge pressure on people who directly interact to understand one another. If X and Y are going to communicate to each one’s benefit, they’re going to need to be able to successfully pass messages back and forth. And when you expand that to an entire society, the principle remains the same: the language of people who are forced to communicate naturally converges to the point of understandability, without the need for actively prescribing rules.
Due to that pressure, most variation within a language is just statistical noise: it’s interesting, it can teach us a lot about the principles of grammar, and I would even say it’s beautiful… but it’s so minor that it doesn’t get in the way of comprehension. It’s really rare for two speakers of the same language to truly not be able to understand each other.
And if that were to happen — if, without the active enforcement of grammatical rules, a formerly common language begins splitting apart… who cares? Historically, that’s happened plenty of times. The various Romance languages all descended from dialects of Latin, Old English branched away from Old Germanic, and so on and so forth. Languages split when that social pressure goes away: when one population of Old Germanic speakers no longer are interacting enough with the others to need to maintain cross-group intelligibility. It’s a perfectly natural linguistic process, and it almost doesn’t make sense to stand in its way. If we need to understand one another, we will, and if we don’t, what’s the point of making sure we can?
So that’s my answer! The explicit enforcement of grammatical rules is unnecessary and only serves to unfairly shame speakers of nonstandard variants. If we just let the invisible hand take care of it (the way many societies have done and continue to do today), an equilibrium of necessary intelligibility in language would soon be achieved.