A: the moon is made of green cheese
B: You're quite wrong, the earth is made of green cheese
A: The evidence clearly shows that the earth is made of green cheese .
B: It is clearly not true that the earth is made of green cheese .
A: Isn't that a non sequitur?
B: It is quite obvious that it is not the case that the earth is made of green cheese
A: 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.
MoonShadow/FlameWar