When Jessica Wachter, a finance professor at the University of Pennsylvania's Wharton School, wanted to assess AI's impact on the economy over the next few years, she faced a long list of business and technical uncertainties. So she started with what she calls a remarkable fact" that is not in question: A handful of so-called...

This is today's edition of The Download, our weekday newsletter that provides a daily dose of what's going on in the world of technology. What's at stake in AI's trillion-dollar gamble When Jessica Wachter, a finance professor at the University of Pennsylvania, wanted to assess AI's impact on the economy over the next few years,...