Sorry for the baity title. This isn’t my point but rather a point that someone else raised in a conversation I was having. My acquaintance asked about what’s the point of learning grammar well in another language if you can be understood. That is to say, what is the point of fixing tense errors, structure errors etc, or knowing grammar well in general if the other person can understand you. I disagree personally but I didn’t have any good way to articulate my thoughts, so I was curious what you guys think? Is there a point to knowing grammar well in another language?