Artificial intelligence (AI) is likely to be the most consequential change to the US and global economies in his lifetime, Federal Reserve Chair Kevin Warsh said on Friday, while cautioning that its near-term impact on employment remains uncertain and the transition to a more productive economy could be bumpy. Speaking with International Monetary Fund (IMF) Managing Director Kristalina Georgieva in a fireside chat in Bangkok, Warsh said AI would reshape the real economy, with its effects likely to be felt on the demand side before the technology delivers a supply-side shock.