Last year, the holiday shopping season was kind of a disaster. With a lot more people shopping online because of the pandemic, millions of packages were delayed or delivered late. This year could be worse. There are shortages of materials, products, shipping containers and workers, and Deloitte estimates that online sales will jump by 11% to 15% this season. Retailers and shipping companies are trying out robots that can help them sort through items. Marketplace’s Marielle Segarra speaks with Ken Goldberg, a professor of industrial engineering at the University of California, Berkeley, and a co-founder of Ambi Robotics.