At a recent technology conference, Marc Lore, the billionaire cofounder of Diapers.com and Jet.com, was describing his newest venture.

It’s called Wonder, and it operates about 120 “tech-enabled” kitchens across the northeastern U.S., each one a fast-casual storefront that Lore calls a “programmable culinary platform”: an all-electric kitchen with a 700-ingredient library, a staff of up to 12, and a growing complement of conveyors and robotic arms capable of preparing meals from 30 different restaurant brands simultaneously in one location. The company has partnerships with Bobby Flay and José Andrés, and it recently bought the robotics firm that automated Sweetgreen’s kitchens.

The secret sauce to Lore’s newest food venture, however, is not grandma’s recipe. It is AI that helps you decide what to eat. “Ninety percent of my meals that I’m eating on a daily basis, weekly basis, are AI-directed,” Lore said recently. “I’m not choosing what to eat.…