Elif Batuman joins Deborah Treisman to read and discuss “Truth and Fiction,” by Sylvia Townsend Warner, which was published in The New Yorker in 1961. Batuman is the author of one book of nonfiction, “The Possessed: Adventures with Russian Books and the People Who Read Them,” and two novels, “The Idiot” and “Either/Or,” which was published earlier this year. She has been a staff writer at The New Yorker since 2010.