‘A feedback loop with no brake’: how an AI doomsday report shook US markets

Shares in Uber, Mastercard and American Express fall on back of apocalypse scenario posted on Substack US stock markets have been hit by a further wave of AI jitters, this time from yet another viral – and completely speculative – warning about the impact of the technology on the world’s largest economy. The latest foreboding is from Citrini Research, a little-known US firm that provides insights on “transformative ‘megatrends’”. Its post on Substack, which it called a “scenario, not a predict