道德起源和演化具有一定范式和路径，面临一种被选择的竞争压力并受人的理性和认知水平的制约和影响。
The origin and evolution of morality has a model and path. It is restricted, affected and selected by a kind of competition pressure and human being's cognition and rationality.
自然形态在经过长期的演化后具有自身的合理性和自然美感，包含着精深的功用与形态的联系。
The nature form includes rationality, nature-beautiful, the relationship between function and form after long-term evolvement.
在此背景下，本文以经济学效用概念的演化为主线展开研究，深入探讨经济人假设的合理性、局限性以及经济学的研究对象和研究方向。
Under the background, we focus on the deduction of the concept "utility" in economics and analyze the rationality and limitation of "economical man" and the research object and direction of economics.
应用推荐