Holy shit this looks tacky. Response speed is WAY too fast for the effect of feeling like something is writing on the other side. Text is very much written in the style of an LLM.

> an answer writes itself back in a flowing hand, stroke by stroke, then fades away.

Characters aren't "flowing" at all, it's very much just printing text. Like, I could change my terminal font to a fancy font and get very much the same visual experience.

Also, how are we not over Harry Potter yet? There's a MILLION examples of this phenomena in fiction. Heck, even the Bible has an example of text mysteriously appearing (it's where we get the idiom "The Writing's on the Wall".)