A Nobel Prize-winning economist says artificial intelligence is unlikely to restart the era of rapid productivity growth in Western economies. The comments respond to widespread expectations among technology companies and policymakers that AI could lift economic performance and reverse the slowdown in growth seen over recent decades. The economist’s assessment is that the productivity surge associated with earlier periods of expansion may not return, suggesting structural factors behind slower growth could limit AI’s impact. While AI continues to advance and attract major investment, the economist argues it will not automatically translate into the kind of sustained, economy-wide growth rates seen in the past. The warning implies that governments and businesses may need to adjust their expectations and consider broader economic constraints beyond AI adoption. Overall, the sources present a cautious view: AI may improve specific industries or productivity measures, but it is not expected to recreate a broader, long-running growth boom for Western economies.