The Jewish Museum Berlin’s new exhibition “The Whole Truth… Everything You Always Wanted to Know About Jews” (the subtitle was inspired by Woody Allen), has on display a “Don’t Worry Be Happy” kippa. It has interviews with rabbis about what it means to be Jewish. It has a video of the “Curb Your Enthusiasm” episode where Larry David invites a contestant from the TV show “Survivor” and a Holocaust survivor to dinner. It also has that clear box, where a Jewish volunteer sits for a few hours every day (except Saturdays), and answers whatever questions visitors might have about Judaism.