The so-called "Semmelweis reflex" is a metaphor for a certain type of human behavior characterized by reflex-like rejection of new knowledge because it contradicts entrenched norms, beliefs or paradigms. It's named after Dr. Ignaz Semmelweis (1818-1865) whose ideas were ridiculed and rejected by his contemporaries. Another term for it is "cognitive dissonance" and "the march

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