This afternoon the MAA-AMS-SIAM Gerald and Judith Porter Public Lecture was given by Cathy O’Neil, “Big data, inequality, and democracy.”

O’Neil started by giving on overview of what she calls a *Weapon of Math Destruction*. They are “creepy algorithms,” O’Neil says, ones that are used by large groups of people to make important decisions, and they are algorithms that are secret and unfair. O’Neil has talked about these sorts of algorithms on her blog and in her column for *Bloomberg View*.