"Using an implant, a paralyzed individual managed to type out roughly ninety characters per minute simply by imagining that he was writing those characters out by hand."
I wonder if it would be faster if you could imagine typing on a virtual keyboard. It must take less muscle (and therefore, less mental acuity) to press a key than to write, say, a capital E.
On the other hand, it might be harder to identify pressing an E vs a W.
I suppose it would matter how good of a touch typist someone was. On the other hand, if your penmanship is horrible, wouldn't you need really good optical reading to discern, say, an O from a D?
I would think the hard part would be determining between different keys pushed by the same finger, like E vs D.
Fascinating stuff, it's getting there.
This and AR are things I can believe in as a next chapter for everyday computing. AI is cool but it still feels more like a tool to speed up secondary technologies, like these.