I didn't mean to narrow it down to contradictions alone. For example, I've seen and participated in more than one argument where a poster was claiming that the Twins Paradox of Special Relativity is a genuine problem that only (thankfully) gets resolved by General Relativity, negating the simple unambiguous solution Einstein himself gave in 1905 or the many other straight-forward approaches yielding the same result. I think what the majority of the posters find objectionable is to either distort the truth by misrepresenting a theory or fact, or to misrepresent one's self and one's own knowledge level in making an argument. The whole idea of a scientific discussion is to try and avoid shouting matches and appeals to authority, and that's what posters like Farsight are reduced to even as they accuse others of the same. I'm not saying that I'm perfect and everything that comes out of my own mouth is true or free of error. However, I do have an intimate technical familiarity with many scientific subjects and am thus frequently able to appeal to widely established experimental facts and mathematical deductions, without any regard for whether Einstein or anyone else agreed with it. Making absurd, demonstrably false claims and then disingenuously misrepresenting one's self and others in defending them is what pisses most people off here and gets sanctioned. Take Farsight as an example once more. I can say whatever I want about his theory and about nature in general, and what objective evidence can he appeal to in order to debunk it? A picture he drew? He doesn't know how to apply his own ideas to model something you could physically interact with on any level, he has no logical or experimental reality check; I wouldn't even trust him to estimate the fall time of a weight on a simple pulley, with his theory or anyone else's, yet he insists on having his claims stand on equal footing in the physics section alongside everything else, in his own thread as well as in other peoples' threads. He doesn't know what basic high school physics says, nor what advanced modern physics, and he still wants to tell us it's wrong all the same; it's stupendously ridiculous behaviour, and I think a part of him already knows that.