The flip side was, calligraphy was sufficient evidence for both his education to whoever hired him, and for a recipient of a document, of its official nature. Calligraphy itself or course didn't make him efficient or smart or fair.
That's long gone of course, but we had similar heuristics. I am reminded of the Reddit story about an AI-generated mushroom atlas that had factual errors and lead to someone getting poisoned. We can no longer assume that a book is legit simply because it looks legit. The story of course is from reddit, so probably untrue, but it doesn't matter - it totally could be true.
LLMs are fantastic at breaking our heuristics as to what is and isn't legit, but not as good at being right.