CREATE TABLE table_73416 ("Season no." FLOAT, "Series no." FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" FLOAT, "U.S. Viewers  ( millions ) " TEXT)

who are the writers when the production code is 8011?
SELECT "Written by" FROM table_73416 WHERE "Production code" = '8011'
SELECT "Written by" FROM "table_73416" WHERE "Production code" = '8011'