What does it mean to learn a natural language? Absolutely nothing unless you have a significant understanding of it to be useful. Its like how people “know” ten

What does it mean to learn a natural language? Absolutely nothing unless you have a significant understanding of it to be useful. Its like how people “know” tens of second languages without very much fluency in any of them to be useful besides bragging. I suppose because programming is easier to learn this might not be true.