A: the earth is made of green cheese
B: It is clearly not true that the earth is made of green cheese .
A: It should be obvious to anyone with half a brain that the earth is made of green cheese .
B: the earth is self-evidently not made of green cheese .
A: The evidence clearly shows that the earth is made of green cheese .
B: It is not evident that the earth is made of green cheese .
A: You're quite wrong, all crows are black
MoonShadow/FlameWar