A world premiere by C. Meaker, You Must Wear a Hat is filled features Tuesday & Weeks, who make hats on the Great Barrier Reef, waiting for the world to end. The fish have died, the coral won’t hold on for long, and it’s been a considerable time since they saw another person. It is very, very hot outside. You must wear a hat. They pass the time together, making hats. And deciding whether or not to ... keep making hats.