I would say that unless you know the rules (imaginary or real), it's not possible to break them in a way that is interesting. A programming example: PEP 8 makes no difference to whether or not your Python code will run. You can quite happily code all day without knowing anything about it. There are also plenty of times when you shouldn't follow it religiously. But without reading it and taking on board what it means, people will find reading your code more tiresome, and you won't know when to break the rules in a way that's helpful or interesting for the reader. The same, I believe, applies to English grammar.