> How will we know in the future that what we are replying to is not some bot with alter motive?
How do you know today that you are not doing the same? How did you know last year you were not conversing with some bot? Absent some tell to indicate "likely a bot" you have no way to know with certainty.
"On the Internet, nobody knows you're a dog" (https://en.wikipedia.org/wiki/On_the_Internet,_nobody_knows_...)
I use your comment
The same way you [prevent] yourself from [engaging] with trolls. Be alert, [pay attention], when you get the [sense] you are engaging in [fake content] (or with a troll) then [disengage].
The same way you [prohibit] yourself from [involving] with trolls. Be alert, [take note], when you get the [hunch] you are engaging in [fluff] (or with a troll) then [withdrawal].
That's enough data to encode.
Does even matter? As long as the replies are sufficiently relevant, and I am completely blinded.
This gets you in the habit of spotting slop, and sends signals to slop posters and HN moderation algorithms. If enough of us do this, we can clean up the joint.