I agree that science and politics play roles on each other. I would argue the role of the government is for community functioning. The applications of science involve how society views the earth. However one might ask the question of whether scientists are always thinking of the community when they begin their research? If this is not always true this could be one of the ways science is separated from politics, because its original goal is not to serve the community. It may be curiosity over an unknown bit of knowledge. By funding a research project the government says which projects it views as important. If policy is driven by the knowledge science provides the government always uses science. In this way politics cannot be viewed without science, but science may be viewed without politics.