some people believe that using books should be easy and all of the population able to use public libraries and the other hand some people think public libraries are not useful at this time. in my ,opinion public libraries can help people easy availability books without any cost. In fact that globalization was a phenomenon in a decade and books were increased the knowledge of the spread of technology and innovations. for ,example students in school and university have access to updated articles and books in public libraries and improve findings in researchers. this subject can lead to important scientific achievements and great inventions in the future and help to the growth of industrial and manufacture to produce better products.