变化无常，愈显脆弱。女性的花心指的是什么

　　A Documentary following the misinformation of the attacks of Sept 11, 2001. Research journalism at its best, and better than Micheal Moore's Fahrenheit 9/11. Worth every minute, just to listen to the ideas of this documentary. Must see this movie, order the DVD from these guys to support them. 　　 　　Summary written by Georgefoman(imdb.com)