In addition to being a programmer and computational linguist, Ryan North (@ryanqnorth) is the writer behind Dinosaur Comics, Unbeatable Squirrel Girl, the Adventure Time comic book series, and Romeo and/or Juliet, and he joins Andy and Matt to discuss his new book How To Invent Everything, a survival guide for stranded time travelers who need to figure out where they've landed in time, and how to get civilization back to the present by inventing everything from writing and farming to buttons and birth control.