IBM reported earnings Wednesday. The company has been on a long turnaround path, focusing its business on cloud services, security and data analytics. It’s also investing in artificial intelligence, mostly under the brand of the "Jeopardy"-winning supercomputer Watson. Marketplace Tech host Molly Wood talks to Brandon Purcell, an analyst with Forrester, about the profit potential of artificial intelligence for IBM and other tech companies. (07/19/2018)