India, Oct. 5 -- Last month, as a nation debated whether its new Parliament building should be photographed with or without the national flag, two teenagers in different corners of India went hunting for a quick answer. One opened Wikipedia on a cracked phone screen; the other asked Grok, the chatbot inside Elon Musk's social feed. Both wanted the same thing: a short, reliable note on the building's architectural symbolism. Within minutes, each had a paragraph. Neither realised that the paragraphs quietly disagreed on who first proposed the lotus motif. Wikipedia credited a French-trained Bengali engineer; Grok named a British planner from 1911. Both sounded equally confident. Both supplied links-Wikipedia to a 1952 monograph, Grok to a 2...