在同一思维过程中,如果面临两个相互矛盾的论断,我们必须从中选择其一,而不能全盘否定。例如,面对“所有苹果都是红的”和“有的苹果不是红的”,我们必须选择其一。否则,我们的思想就不确定,就违反了逻辑学上的排中律,犯了“两不可”的逻辑错误。然而,在现实生活中,并非每个人都明了这个道理,于是,便产生了一类特殊的笑话——“排中笑话”。请看: In the same thinking process, if we are confronted with two contradictory arguments, we must choose one from the other, and we cannot completely deny it. For example, in the face of “all apples are red” and “some apples are not red,” we must choose one. Otherwise, our thinking is uncertain, it violates the logic of the law of exclusion, and made a “two can not be” logical error. However, in real life, not everyone understands this truth, so they have produced a special kind of joke - “Joke in a row.” Please see: