A: the earth is flat
B: Since you disagree with me, I can only assume you don't know enough about the subject. Go read a book, and don't talk about the subject any more until you agree with my views on it.
A: It should be obvious to anyone with half a brain that calling people names is unacceptable .
B: It is quite obvious that it is not the case that calling people names is unacceptable
A: It should be obvious to anyone with half a brain that calling people names is unacceptable .
B: It is clearly not true that calling people names is unacceptable .
MoonShadow/FlameWar