Each of these fallacies is characterized by the illegitimate use of a logical operator in order to distract the reader from the apparent falsity of a certain proposition . Either you're for me or against me. Either support Meech Lake or Quebec will separate.
Every person is either wholly good or wholly evil.
Conversely, such an argument may assume that since something has not been proven true, it is therefore false. Lack of proof is not proof. Since you cannot prove that ghosts do not exist, they must exist. Since scientists cannot prove that global warming will occur, it probably won't. Fred said that he is smarter than Jill, but he didn't prove it, so it must be false.