The Importance of Line Width in Pens

On, on the surface, it looks like a needle tip. But why it is so smooth is there is actually a tiny, tiny roller ball in the tip of that pen. And this will be a, uh, a good item to include in the notes that you can't tell by looking at it. So the, the high tech C, is that a rollable? Oh, I'm,. is that a needle? It's considered a needle. Right.