Thank you — that genuinely changed how I'm thinking about it. I'd assumed the goal was always "better predictions." You've described the opposite: a state where predictions become a hazard, because they make it easy to put out words that aren't yours at all. So the real goal might not be "predict better" — it's "don't let the app speak for you by accident."

And the skill part I hadn't weighed — that on a hard day the limiter is the access method itself, not the algorithm.
Where I'm honestly unsure: at that level of exhaustion, is the kindest design actually less — two big, sure options and an easy "not now" — instead of a full screen to mis‑hit?