[deltop]

Being good at any job usually requires you to be proficient at all kinds of things. Being a good teacher certainly requires you to master a multitude of skills.

So to call someone a bad teacher just because you disagree with how they advise (or indeed dictate to) their students on one issue is hardly cause to tell them that they are bad at their job.

Sirbruce could easily have said they he disagreed with thibaulthalperns opinion of wikipedia and asked him to clarify what he though of printed media and how reliable that was in comparison. Or just asked him to explain his reasoning more fully. A sensible and less argumentative discussion could have followed. That's how I would of done it. No need to start telling people they are bad at their job. It's just bad manners and not what I've come to expect from this forum.