This is incredible to me, the kind of science fiction I actually want to see become fact in situations like this. I'm wondering a bit about this claim, though,

This is incredible to me, the kind of science fiction I actually want to see become fact in situations like this. I'm wondering a bit about this claim, though, and hoping someone more familiar with the field can shed some light on it: > The device predicts the wrong word less than 3 percent of the time, an error rate on par with nondisabled speakers reading a paragraph aloud. Does this mean that in a paragraph of 100 words, nondisabled readers are expected to get 3 words wrong? That would be a lot higher than I would expect, but is what it sounds like the quoted sentence means. Or is it more like if a hundred nondisabled people read a standard paragraph out loud, three of them would trip over (at least) one word in it? This seems closer, but still like a fairly high error rate for something they're calling "perfect."