The Gut of Justice: Potter Stewart and the "I Know It When I See It" Legacy

Have you ever tried to define a concept that feels completely obvious in your head, but the second you try to put it into words, the idea just disintegrates? In this episode of pplpod, we explore one of the most famous linguistic collisions in legal history: Justice Potter Stewart’s legendary admission during the 1964 Jacobellis v. Ohio case. Faced with the impossible task of defining "hardcore pornography" to determine its status under First Amendment protections, Stewart effectively threw his hands up, stating the now-iconic phrase, "I know it when I see it." This single moment of candor exposed the underlying fragility of obscenity law and the inherent limits of our shared vocabulary. We journey from the restrictive 19th-century Hicklin test to the modern-day Miller test, examining how the highest court in the land struggled to regulate human expression using free speech guidelines that often rely on subjective human instinct rather than cold, objective logic. By unpacking the philosophical concepts of qualia and tacit knowledge, we reveal how a massive portion of our legal framework is built on invisible assumptions we collectively agree upon, yet often fail to define.

Key Topics Covered:

• The Jacobellis Stress Test: Analyzing the 1964 showdown over the French art-house film The Lovers and the conviction of theater manager Nico Jacobellis that reached the Supreme Court.
• From Hicklin to Roth: Tracing the evolution of censorship from the broad 1868 "weakest link" standard to the 1957 pivot toward the "average person" and contemporary community standards.
• The Philosophy of Qualia: Exploring how Justice Stewart ran head-first into the "hard problem of consciousness" while attempting to draft a legal instruction manual for human perception.
• The Miller Breakthrough: Deconstructing the three-pronged framework established in 1973 that still governs how states define and prosecute offensive sexual conduct today.
• The Tombstone Regret: A poignant look at Justice Stewart’s 1981 reflection on his legacy and the tragic irony of a brilliant jurist being remembered for a single colloquial soundbite.

Source credit: Research for this episode included Wikipedia articles accessed 2/27/2026. Wikipedia text is licensed under CC BY-SA 4.0; content here is summarized/adapted in original wording for commentary and educational use.