The content of the law of exclusion is that in the same thinking process, two contradictory thoughts for the same object must be true and not false at the same time. The content of the law of contradiction is: in the same thinking process, any thought They cannot conflict with each other, and they cannot affirm a thought and negate it at the same time; because a thought and its negation cannot be both true at the same time.
According to the above definition, the reporter said at a conference on protecting children's rights that it is wrong to teach children to sacrifice their own lives; Later, in a lecture to parents, he said it was wrong not to teach children to sacrifice themselves violates the law of exclusion.