NEW YORK, Dec 4 : The transformative effects of artificial intelligence dominated discussions at the Reuters NEXT conference in New York, with panelists concentrating on how it may upend work - and job growth - sidestepping concerns about an AI bubble.  Artificial intelligence represents the biggest technological upheaval to the world economy since the rise of the internet a quarter-century ago. It has brought trillions of dollars of investment and dizzying stock-market gains, but also a