tomorrowland profit Keynes argued that savings and investment were two interdependent variables, not two independent variables. The principle of rational investment: investment in securities investment in analysis and comparison. Edwards and bell's point of view The school provides excellent education to its students and grooms them into responsible citizens around the globe. The school carries a very well-maintained infrastructure. The school has well-lit and ventilated classrooms. The school features a big playground which includes provision for games like basketball, indoor games like gymnastic, chess, table tennis and carom etc. The school features a well-trained staff that's very committed to teaching. The teachers impart education inside most beneficial way. The teacher-student ratio with the school is well-balanced to ensure that just about every student gets health care and attention. The school has a library that includes a good number of books. Value theory of the many contradictions and arguments, essentially derives from the different definitions of value, originated in the people for the different understanding of the concept of value, value, from the perspective of physics can put the theory of value based on the foundation of natural science, with a high degree of accuracy, objectivity and rationality, so that the value theory of widespread vagueness, subjectivity and ambiguity naturally are addressed. As social things all the movement and the change of value relation is in essence the motion and change, so the value theory is the foundation of social science theory, if the value theory is built on the basis of natural science, can greatly promote the fusion and unity of the social science and natural science, but also make the social science become subservient to the natural sciences.