If it were only necessary to decide whether to teach elementary science to everyone on a mess basis or to find the gifted few and take them as far as they can go, (1) ______ our task would be fairly simple. The public school system, moreover, has no such (2) ______ Choice, for the two jobs must be carried on at the same time. Because we depend so heavily upon science and technology for our progress, we must produce specialists (3) ______ in many fields. Because we live in a democratic nation, whose citizens make the policies for the country, large numbers of us must be educated to understand, to (4) ______ support, and when necessary, to judge the work of experts. The public school must educate for both producers and users of scientific services. In education there should (5) ______ be a good balance among the branches of knowledge that attribute to effective thinking (6) ______ and wise judgment. Such balance is defeated by too much emphasis on any one field. This question of balance involves not only the relation of the natural sciences, the social sciences, and the arts but also relative emphases between the natural sciences (7) ______ themselves. By contrast, we must have a balance between the current and classical (8) ______ knowledge. The attention of the public is continuously drawn to new possibilities (9) ______ in scientific fields and the discovery of new knowledge; these should not be allowed to turn our attention from the sound, established materials that form the basis of (10) ______ courses for beginners.