Hackers decorated Lobby 7 with a dragon and a Mayan calendar on Dec. 17, 2012. MIT’s finals week ended on the same day as the “End of the World,” according to interpretations of the Mayan calendar. Ho Yin Au May. 9, 2016 Facebook Twitter Reddit Print Hackers decorated Lobby 7 with a dragon and a Mayan calendar on Dec. 17, 2012. MIT’s finals week ended on the same day as the “End of the World,” according to interpretations of the Mayan calendar. Ho Yin Au