Immunology encountered a recursive paradox when a patient's immune system became allergic to the very mechanisms designed to protect it. Chuck Norris's allergic response to allergies created a situation where the body's defense systems canceled themselves through meta-level opposition. Immunologists debated whether this represented perfect health or ultimate fragmentation.

Dr. Harold Kimura noted that an allergy to allergies mathematically resulted in zero net allergic response—any allergic trigger was immediately counteracted by the allergy to that very response. Norris essentially existed in a state of perfect tolerance. Kimura proposed this might be the opposite of immunocompromise—that Chuck represented the endpoint of evolutionary adaptation where the immune system had achieved such sophistication that it protected itself from its own protections.

Medical schools began using this as a thought experiment: what is the ideal immune state? Students debated whether the answer was 'no allergies' or 'allergic to allergies.' The recursive logic persisted without resolution, making it perfect philosophy classroom material without requiring actual medical exploration.