How can you know if anyone here is trolling or not? You can't really know for sure.
The definitions do seem to account for intention. So it is hard to tell for sure.
But generally, trolls lie, exaggerate, misrepresent, and often even openly enjoy the chaos and disruption they create. When you see these behaviors, they are evidence of trolling.
I think there are behaviors that are somewhat similar to trolling, but are not. They include things like:
1) Playing Devil's advocate.
2) Trying to create cognitive dissonance. (A necessary thing to change a person's mind in a rational way.)
3) Pointing out injustices by authorities.
4) Just kidding around.
Accept the past. Live for the present. Look forward to the future. Robot Fusion
"As our island of knowledge grows, so does the shore of our ignorance." John Wheeler
"[A] scientist looking at nonscientific problems is just as dumb as the next guy." Richard Feynman
"[P]etabytes of  data is not the same thing as understanding emergent mechanisms and structures." Jim Crutchfield
I met a girl who wore an oversized sweater and tangled black hair, years back, who, while wandering through an alley blanketed by colored leaves, murmured something that permanently altered my path in life. "Tim," her fingers probed and curled around mine in my coat pocket as she leaned in, "truth is a lie."
That night was the last I saw her, and my eyes have never been the same.
if we think of a troll as someone under the bridge that makes sense. one person comes and pokes the troll with the stick, and angers the troll, but it is the person with the stick's fault but they don't get in trouble cuz they look normal in society, while the troll is the one who gets punished. because people are racists against creatures living under the bridge. and maybe the troll wouldn't be an issue if the people with the sticks would get their eyes jabbed out.
To me, a troll is someone who gets angry when the other person asks a question, wishes him a good day, or simply passes by, whistling a happy tune.
Hope is the denial of reality. It is the carrot dangled before the draft horse to keep him plodding along in a vain attempt to reach it. We should remove the carrot and walk forward with our eyes open. -- Raistlin Majere