Most US Growth Now Rides on AI—And Economists Suspect a Bubble

What happens when artificial intelligence becomes both the economy's primary engine and its potential Achilles' heel? We may be about to find out. Harvard economist Jason Furman recently said that AI investments accounted for nearly 92% of U.S. GDP growth in the first half of 2025. Basically, the entire American economy put its eggs in one algorithmic basket. And that basket might be ready to break. Today, the Bank of England warned that market valuations for AI companies are increasingly irrational. “O ...