Exactly what I was thinking. Unsupervised learning from trolls created an AI troll. Seems like a success in the learning aspect.

How do they fix it though? It doesn't seem like balancing it with more "normal" input would be enough. They almost have to teach it good vs evil (morals), or else give it a way to recognize sarcasm and trolling from normal discussion.

Side note: as a parent of teenagers, humans seem to pick up good vs. evil much more easily than recognizing sarcasm and trolling. Wonder which is easier to teach an AI?