The theory of the least objectionable program (LOP) is a mediological theory explaining television audience behavior.[1] It was developed in the 1960s by then executive of audience measurement at NBC, Paul L. Klein,[2][3] who was greatly influenced by the media theorist Marshall McLuhan's Understanding Media.
The theory also promoted discussion in the legal world about what qualified as "objectionable programming," and how this lack of definition prompted a complex series of legal battles in the United States.[4]