| Index: > A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
|
|||||
The origin of this phrase comes from the belief in medieval times that outbreaks of plague were caused by Jews poisoning the water supply. Suggesting that someone was not to be trusted after accusing them of the unrelated crime of poisoning the water was effective rhetoric, but bad logic.
Poisoning the well is a special case of argumentum ad hominem.
See also: Guilt by association.