So instead of "that is stupid", "add comment", "you're wrong on the internet", "submit", I think we could be able to have more information about the context of the words:
(:commentary "that is stupid")
(:request-interaction "add comment) ; from which the AI figures out it is a button on the screen
(:request-input "You're wrong on the internet")
(:request-interaction "submit)
“Fake news” (the original term, not the co-opted one) is an example of society affecting conveniences that we have no answer for.
Messing with intent is another such area.
The same procedure would be more difficult to implement for thought-based interfaces, though, because you need to predict the brain's reactions to filter the signal. Maybe you could instead use a non-verbal thought to activate the command interface, so that it doesn't get triggered accidentally.
When I see "horse poop" the thing I'm imagining and hearing in my head is not the individual letters as they appear on the screen at all. I'm hearing it in an internal monologue and I'm imagining and image and a smell.
In other words, the output generates wildly different input so 'subtracting it out' won't really work.
We've all seen people who are new to keyboards, mice and even GUI's attempt to navigate a computer. It's clunky, slow, there's a lot of noise in the movements and erred clicks made.
I think it was here on HN I saw a great write-up once about leaving the gap in UX—that there is a threshold where the use just simply has to learn something in order to effectively use the device.
I don't know how the control interface for thought could look in the end in so few words, but I'm reasonably confident it could be brought down to a certain level that is more than attainable for the average user to meet.
Why would you need to even think in terms of inputs or buttons? Why even use words when you could post or consume thoughts directly?
Presumably a device like that would use some heuristics to guess the correct words, like your phone's autocorrect.
Perhaps it'll pick it up as "the quick brown", or "quick brown the", and so forth.
---
Another problem can be illustrated below:
Say you had your brain device on now. You're ready to reply to this.
Horse poop.
Oh, I guess you read the above and now have "horse poop" typed. Well, you can just remove that ---
"add comment"
"submit"
Too late.