system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Why is everyone using a quill, can't I just use a biro?
gpt
You know those scenes in Karate Kid where Daniel paints the fence, scrubs the floors, and waxes the cars wondering what the hell he's doing it for?  Same principle.  Yeah, quills are tedious, but using them helps you with fine motor control of your hand, and fine motor control with your hand helps you swish and flick more accurately.  Most adults (though not the really old adults who *are* stuck in tradition) use pens.