Terry Gross

Computerized algorithms now do much of the work on Wall Street. Financial journalist Felix Salmon says they've become ingrained in the financial system -- but are also increasingly complex and difficult to regulate.

Joel and Ethan Coen's latest film is an adaptation of the Charles Portis western novel True Grit. The filmmakers and writers discuss the making of the film and the difficulties of working with both child actors and horses.

Writer Mira Bartok's memoir, The Memory Palace, is in part about the car accident that left her with traumatic brain injury and about her relationship with her schizophrenic mother. She explains how her brain injury helped her understand — and reconnect with — her mother.