The Fatal Flaw of AI Hallucination: When LLMs Confidently Tell Lies

A journalist recently called out DeepSeek for its "serious lying problem" — the model can write a beautifully crafted biographical sketch in classical Chinese style, but the person's birthplace, mother's surname, and life events are all fabricated. This isn't an isolated incident; it's one of the most stubborn bugs in the LLM industry, and it has a name: AI Hallucination. Right after the May Day holiday, a few bombshells hit the AI world. First, DeepSeek was called out for becoming "cold and pompous" — it stopped using user nicknames, and its responses started sounding like a school principal. Then journalist Lao Zhan publicly called out DeepSeek's fatal flaw: it fabricates facts. He asked DeepSeek to write a biographical sketch of him in the style of the Records of the Grand Historian. The result was eloquent and impressive — but his birthplace was wrong, his mother's surname was fabricated, and 70 years of life experience had been "re-created" by AI. Even more alarming, last