Films purporting to show real events captured with avideo camera eventually run into a problem of credibility: when all hell isbreaking loose, no one in his right mind is going to keep filming.

• 许多电影试图展示摄影机捕捉到的现实生活，最后却陷入了缺乏可信性的难题：当九死一生逃出地狱之时，任何有理智的人都不会边逃边拍电影。