You, and OP, are taking an analogy way too far. Yes, humans have the mental capability to predict words similar to autocomplete, but obviously this is just one out of a myriad of mental capabilities typical humans have, which work regardless of text. You can predict where a ball will go if you throw it, you can reason about gravity, and so much more. It’s not just apples to oranges, not even apples to boats, it’s apples to intersubjective realities.
I don't think I am. To be honest, as ideas goes and I swirl it around that empty head of mine, this one ain't half bad given how much immediate resistance it generates.
Other posters already noted other reasons for it, but I will note that you are saying 'similar to autocomplete, but obviously' suggesting you recognize the shape and immediately dismissing it as not the same, because the shape you know in humans is much more evolved and co do more things. Ngl man, as arguments go, it sounds to me like supercharged autocomplete that was allowed to develop over a number of years.
Look up predictive coding theory. According to that theory, what our brain does is in fact just autocomplete.
However, what it is doing is layered autocomplete on itself. I.e. one part is trying to predict what the other part will be producing and training itself on this kind of prediction.
What emerges from this layered level of autocompletes is what we call thought.
I feel the link between humans and autocomplete is deeper than that an ability to predict.
Think about an average dinner party conversation. Person A talks, person B thinks about something to say that fits, person C gets an association from what A and B said and speaks...
And what are people most interested in talking about? Things they read or watched during the week perhaps?
Conversations would not have had to be like this. Imagine a species from another planet who had a "conversation" where each party simply communicated what it most needed to say/was most benefitial to say and said it. And where the chance of bringing up a topic had no correlation at all with what previous person said (why should it?) or with what was in the newspapers that week. And who had no "interest" in the association game.
Humans saying they are not driven by associations is to me a bit like fish saying they are not noticing the water. At least MY thought processes works like that.