CREATE TABLE table_21739 ("Series #" FLOAT, "Episode #" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "U.S. viewers  ( million ) " CLOB, "Original airdate" CLOB, "Production Code" CLOB)

Who were the writers for production code 2t6268?
SELECT "Written by" FROM table_21739 WHERE "Production Code" = '2T6268'
SELECT "Written by" FROM "table_21739" WHERE "Production Code" = '2T6268'