Our podcast team is taking a break this week for the holidays. We’re revisiting some of our favorite interviews from 2016.   Back in May, we spoke with author and historian Abby Smith Rumsey about her latest book, “When We Are No More: How digital memory shapes our future.” The book explores human memory from pre-history to the present, from pictures painted on cave walls to the present, with all the world’s knowledge available in an instant on our mobile devices.