CREATE TABLE table_30084 ("\\u2116" FLOAT, "#" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT, "U.S. viewers  ( million ) " TEXT)

Who wrote the episode having a US viewership of 3.74 million?
SELECT "Written by" FROM table_30084 WHERE "U.S. viewers (million)" = '3.74'
SELECT "Written by" FROM "table_30084" WHERE "U.S. viewers (million)" = '3.74'