Ah, so like having the wrong token for an entry gate.

( passwords are more things he's learned here, such as it is, but that does make sense to him. also, Idia working on the ereader has one hovering Jingyi, who is unapologetic for the fact he's hovering to learn and watch what the guy's doing to make this thing function. )

You can teach it what to do once and not have it forget? The printer isn't going to mess that up at some point, will it?

( probably not, but he assumes all technology will have issues, because even lower level technology has issues periodically in his experience. )