由于客观事物具有质的多样性,它们的运动规律往往是非常复杂的,不可能很容易地认识清楚,因此,在研究问题的过程中就需要抓住事物的本质特征,忽略次要因素或无关因素,经过科学抽象建立理想化模 Because of the qualitative diversity of objective things, their movement laws are often very complex and cannot be easily understood. Therefore, in the process of studying problems, we must seize the essential characteristics of things, neglecting secondary factors or irrelevant. Factors, the establishment of idealized models through scientific abstraction