Howling:What do you get when you multiply 6 by 9?

When last season had the 50-foot-high letters on the oldest cliff face in the universe, that just seemed like a throwaway reference. But now, (35 minutes into Let's Kill Hitler) we learn that the Silence are devoted to stopping anyone from discovering the Question (the first question, the oldest question in the universe, hidden in plain sight). In HHGTTG, if anyone discovered the Ultimate Question, the entire universe would vanish, to be replaced by something even more bizarre. In Doctor Who, if anyone asks the Question, Silence Will Fall. --173.228.85.35 02:05, August 28, 2011 (UTC)

Douglas Adams worked on DW before he wrote HHGTTG. Arthur Dent was referred to in The Christmas Invasion. The title of Series 3, Episode 7 was 42. It shouldn't be a huge surprise if other similarities crop up. --2.96.17.180 19:37, August 28, 2011 (UTC)