Things that we have an use that are commonplace today were unimaginable for people just 50 years ago. I believe that in 100 years there will be technology that we cannot imagine now. There are so many developments in telecommunications and transportation. I'm sure space travel will become more feasible and commonplace. Medical diagnostics are also improving very quickly. I think eventually there will be very small machines that can test so many things in a person's body. These machines will be able to diagnose patients better than human doctors can. I think that we will use DNA mapping more and more. We will do DNA tests of all children at birth so we can know what illnesses they have a predisposition to. This will be allow doctors to better treat the person throughout life.