CREATE TABLE table_1840 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT, "U.S. viewers  ( million ) " TEXT)

How many different people directed the episode titled 'Born under a bad sign'?
SELECT COUNT("Directed by") FROM table_1840 WHERE "Title" = 'Born Under a Bad Sign'
SELECT COUNT("Directed by") FROM "table_1840" WHERE "Title" = 'Born Under a Bad Sign'