A: all llamas are black
B: It is not evident that all llamas are black .
A: The evidence clearly shows that all llamas are black .
B: I dispute your premise.
A: It should be obvious to anyone with half a brain that all llamas are black .
B: all llamas are self-evidently not black .
A: You're wrong.
B: It is not evident that all llamas are black .
A: The evidence clearly shows that all llamas are black .


MoonShadow/FlameWar