Sat Nev is just another technology that we all use without thinking. We don t buy maps any more .We just switch on our Sat Nav and it tells us where to go We all think it’s great. But some people worry that we rely too much on this technology. They think we might be in danger of losing some skills, such as reading maps. What happens, they say, what we are driving alone in a strange place and the Sat Nov battery runs out? Then we are really lost!