Nowadays, technological instrumets are used by everyone beacuse they make everything fast. in my pinion, the most important techonological development is the computer. it is important in lots of sector, in particular as regards works: in publics offices, in supermarkets, at the bank. No one can do without it: we need the control of a computer when we move from a place to another one, when we go to the doctor for a control, when we study or when we cook. in spite of this, changes caused by technology aren't everytime positive. it could be a problem when you use your personal pc too much houres in a day; for instance, a lots of children play computer games until it became a real dependence, so a real desease. as a conclusion, we can use technology for our necessity, but always in a resonable way.