Nowadays, Many people want to live more easily and more comfortably.
So, we can readily see people use the machines such as cell phone, Navigation, washing machine, television etc. at anywhere in our life.
However, can they really make our life happy and beneficial ?
When we go on a trip, we drive our car making use of a car with a navigation system. Nowadays most of people strongly depend on it.
But it can also turn as a weapon to be able to kill us if it leads a wrong way to us mistakenly or because of malfunction.
There have been some performance tests about it from "KOREA INDUSTRIAL AND SYSTEMS ENGINEERING".
They said, The occurrence of car accidents in using it when driving a car will be higher than if we don't."
Let's think about another machine, we always use.
Most of people has a cell phone.
We can talk to other people, listen to music and play the mobile games with it at any time and at any place.
"WHO(World Health Organization)" announced, the electromagnetic waves of cell phone have made our health in danger.
It sometimes results in brain tumor.
Like this, cell phones also can be a lethal threat for us.
But we can't live without these instruments because they deeply occupy many parts of our life.
So we have to know how to use them properly.
Then we can be damaged the least.
We always depend on machines, you must remember that it can destroy our life little by little.
It seems that the state-of-the-art machines are not always useful for our life.