This project is related to the thema of economy. Some (eight: 1929, 1987, 1989, 1995, 2000, 2007, 2008, 2010) big crisis are opposed to an other sort of crisis, catostrophy: plane crash and earthquake which occured in the same year. Plane crash refers to the take of risk in economy and earthquake refers to the total loss which occurs in an unexpected way.