bubble

News media circulates with warnings about speculative bubbles in artificial intelligence and cryptocurrency, but history shows that not all bubbles are bad for the economy, and some may even aid long-term growth. In new research, Jared Bernstein, Aneil Kovvali and Jeffery Y. Zhang distinguish between constructive and destructive bubbles and suggest how the government and financial institutions can limit the consequences of the latter.

A conversation with Nobel Prize laureate Robert Shiller on his new book, Narrative Economics: "Economists do not study narratives systematically, but they shape the...