When Odo discovers Quark accessing crew quarters illegally to make use of a replicator, Quark references an old Ferengi saying: "Never ask when you can take". This is the first example of a collection of Ferengi maxims related to the accumulation of profit, which later in the series will be referred to as The Ferengi Rules of Acquisition.
Galis Blin appears with Bajoran make-up similar to Ro Laren, with the ridge going across the bottom of the forehead. Other characters such as Kai Opaka and Sito Jaxa who appeared with this extra ridge have had it removed in later appearances.
The title is based on the biblical story of the The Tower of Babel in the Book of Genesis. Man wanted to be closer to God so they built this extremely high tower. God was angered, destroyed the tower and punished the men by making them speak many different languages (everyone was babbling), thus beginning the various nations and cultures after all of man had descended from the same tribe since he was driven out of the Garden of Eden.