*inaudible* with the spren, like, with the *inaudible* would it have infinite ink?
The way it works in my head canon right now, which I haven't written it so if it changes, no. The other thing is getting complex systems is going to be harder for a lot of Spren. There are legends that reference that they were able to do bows in the past, which includes a string. Everyone is like "but they're not metal, how does that work." Complex structures, even the mechanics of a pen is not something that we have proof that they could even do. If they did do it, they wouldn't have infinite ink, you would fill them up with ink.