Have you ever wondered why Friday the 13th, and the number 13 in general, is considered unlucky? We see this in our culture quite often: in movies (Jason Voorhees!), in psychology (triskaidekaphobia is the fear of the number 13), and even in architecture (some buildings don’t have a 13th floor). But where does this fear come from? In the following clip from Life Noggin, you’ll learn about the history and possible origins of Friday the 13th that are really quite interesting. For instance, have you heard of the Thirteen Club? William Fowler, a U.S. Army Captain in the 19th century, started the Thirteen Club (which had 13 members) with the goal of dispelling superstitions.