2008/10 essay(“Navi-time” is really convenient?)

Today, many of us can’t live comfortably without a mobile phone. We us mobile phones to do many things, contact friends, go shopping on the internet, or search for shops where we want to go. Recently, a new function of mobile phone is becoming very popular. This function is called ”navi-time”.
Navi-time is a function like car navigation. We can use a mobile phone to search everywhere we want to go. It looks very easy to use. We only need to input the address where we want to go, then the mobile phone would tell us everything: which transport to choose, how long it would take, which route can take us to our goal. A new type of DOCOMO mobile phone can also show us panoramic photos surrounding the goal. Now we do not need to think about anything or remember anything, only follow the map from Navi-time, and we can go anywhere and find our way back home.
Navi-time looks so nice, but if we use it all the time, we are running some risks. Please imagine what would happen if the cell phones service system were broken. what situation will we be in? We could not use a navi-time, and also wouldn’t know where the hospitals or emergency shelters were, we would not be able to get the route of how to go back home. Someone may think this kind of thing is overstated, but according to research there are four and a half million people could not go back home smoothly in Tokyo Metropolis when the great earthquake happens. Please imagine, when roads and buildings are all broken; there are no trains, no buses, no cell phones can be used; we don’t know which route can take us home, we don’t know where can get food or water emergency; and we don’t even know if we can survive or, how long we can last? This is really a horrible thing, but it’s what would happen.
When we are in our comfortable, convenient daily lives, we are also facing some dangerous. To be a prepared everyday for disaster is not a bad thing. Use a regular book map; try to remember the road we used frequently; study where the hospitals and shelters are near your house, school or office. It may seem troublesomeness, but it really connects to living or death when the miserable misfortune happens.