<human>:  What is the origin of the phrase, "barking up the wrong tree"?
<bot>: The origin of the phrase, "barking up the wrong tree" is thought to be a metaphor taken from hunting practices in the 18th century. Hunters employed dogs to help them find and flush out game. If the dog is chasing a false scent they are said to be "barking up the wrong tree." This metaphor has come to mean going after the wrong solution or contesting a false argument.