理是世界的本质，是任何事物的基础
工是人类利用自然改造自然的能力
理科是人类研究理的学科
工科是人类从工中提炼出来的学科
所以理是一直正确的，而理论是人提炼的，收时代的局限，不可能永远正确
在历史的长河中，人们都是从实践中提炼出理论
再把理论应用与实践，从而带动生产力的发展
所以实践是理论的基础，理论可以为实践做指引
当理论不能在带领人们创造新的生产力，就会被实践推翻，形成新的理论
也就是说当理科研究的东西无法让工科有新的发展的时候
从工科的实践中就会创造出新的理论
The principle is the world essence, is any thing foundation <dnt> the </dnt> labor is the humanity science subjects is the humanity studies the principle using nature transformation natural ability
<dnt> the </dnt> discipline <dnt> the </dnt> engineering course is the humanity discipline
which refines from the labor, therefore the principle is continuously correct, but the theory is the human refines, receives the time the limitation, is impossible to be forever correct
in the historical perpetual flow, the people are refine theory
from the practice again the theory application and the practice, thus leads the productive forces development
, therefore the practice is the theory foundation, the theory may be the practiceDoes directs
, when the theory cannot in lead the people to create the new productive forces, will be practiced overthrows, forms new theory
when i.e. the science subjects research's thing will be unable to let the engineering course have recent development time
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