Stephen J. Dubner of “Freakonomics Radio” has always had a mission: to tell you the things you thought you knew but didn’t; and things you never thought you wanted to know, but do. Now he has a new way of doing just that: “Tell Me Something I Don’t Know,” a live game show that’s a whole new form of factual journalism. The first episode drops on Monday, Nov. 7, so subscribe now! To be a contestant or buy tickets to our tapings in New York City, visit www.tmsidk.com.