Mark Oppenheimer
Mark Oppenheimer

Mark Oppenheimer writes the Beliefs column for the New York Times. He can be found at markoppenheimer.com and followed on Twitter @markopp1.

  Slate Plus
Technology
Aug. 26 2015 12:11 PM Slate Voice: “Space Invaders” Never, ever use two spaces after a period: Listen to Mike Vuolo read Farhad Manjoo’s classic takedown of an enduring typographic sin.