The line between reality and fiction in television hasn't always been obvious to people. Be it "Gilligan's Island" viewers badgering the Coast Guard to rescue the S.S. Minnow's poor shipwrecked crew or grown-up "Sesame Street" fans believing that Sonia Manzano and Emilio Delgado (who played married couple Maria and Luis for four decades) were actually hitched, history is littered with anecdotes of audiences assuming what they're seeing on their TV screen is actually happening. Despite the leaps and gains in the masses' media literacy over time, folks still need help understanding how even docuseries and so-called reality shows can easily manipulate the truth (as creators Nathan Fielder and Benny Safdie satirized with "The Curse").

When Sally Struthers was cast as Gloria Stivic (née Bunker) in "All in the Family," she was, for all intents and purposes, a nobody. Save for her stint on "The Tim Conway Comedy Hour" the...