Whether or Not

Is the phrase whether or not redundant? Well, take this sentence: “Whether or not you like it, Martha is dressing as a ballerina.” Would that sound right without the or not? Now, the or not is technically redundant, but depending on the case, it’s best to pick the wording that won’t distract the reader or listener. The person in charge of the New York Times Style Manual comments on the question. This is part of a complete episode.