Almost a week ago, an arson happened in a car of the special express train that run from Tokyo for Osaka. That train has never suffered from any technical accidents which involved fatal incidents since 1965. Just a kinky guy's crazy and naughty deed has made such a historical mess on the great history of the national railway system. Even though technology is supported by daily laborious cares, just a loophole of human safety cares abandons everything that has been built up for a long time. It is a huge instruction to engineers and technicians.