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A Supreme Court survey released Monday found that eight in 10 South Korean judges have experienced court cases in which false or nonexistent legal precedents generated by artificial intelligence were cited, Yonhap and the Korea Times report. The survey, described as the Supreme Court's first fact-finding on the issue, highlights the severity of AI 'hallucinations' in actual proceedings, with one judge reportedly discovering that a lawyer's cited Supreme Court precedent had a fabricated case number, according to the Kyunghyang Shinmun.