@taifkhan Yes technology is improved day by day but we can't ignore that 70 years ago peoples are live more than 100+ years and also not suffered with lot of disease due to change in environment, Food ,Manure ,chemicals , junk food, pure air, pure water, so many things are their even pollution .we have to control these things if we can control then their is no need to such technology which is too costly also we will be fit and healty .