India, Dec. 30 -- The world of Artificial Intelligence (AI) continued to expand and spread in 2025. Personalities, firms, economies, and societies were judged by the adoption of new-age tech. People's wealth zoomed due to higher and crazy valuations ascribed to tech stocks. Elon Musk was a prime example, as were start-ups in America, China, and elsewhere. The top 10 US founders of the world's largest tech firms added more than half-a-trillion dollars to their wealth. Musk's net worth was up 50 per cent, or more (if one takes the latest figures). Jensen Huang, the CEO of the largest chipmaker, Nvidia, sold a billion-dollar worth of shares to cash on the zooming stock price, even as the firm became the world's first $5 trillion company in O...