I was watching a Top10Archive (YouTube) video and they mentioned the fear among the people leading into January 1, 1000. Leaving the Christian era seemed to be the perfect return date for Christ. Soon followed by the year 1033. 10 were mentioned, but I'm kind of interested in this one because of the fear associated with this number in general. I know a lot of buildings were stopped at the 12th floor to avoid having a 13th. If they would do that in a post 1900 world. What would they do 1300 years ago?