Definition of logic

Logic is the law and rule of thinking , It's an abstraction of the thinking process .
Logic is the law of cause and effect .
Logic is the study of how to infer correctly .
Logic is the study of the connections between things .
The essence of logic is law .
Logic is the correct rules of reasoning used in argument , And all the right reasoning rules are the norms of human thinking , So logic is the law of human thinking 、 The rules 、 standard .
Logic is the law of thinking , The law of thinking is the reflection of man's subjective thinking form on the objective law of the material world .

Logic is the knowledge that guarantees the validity of inference . Follow logical rules , It can not only ensure that the inference is valid , Help us distinguish right from wrong , Reduce unnecessary arguments , Gain a certain understanding , But also from the facts 、 In axiom , Derive deterministic knowledge that we simply can't imagine .

Logic
The thinking process of demonstrating an argument is logic
Inferring from one principle to another / The thinking process of axiom is logic
The thinking process of reasoning from a cause to a result is logic

So logic is reasoning 、 The thinking process of argument .

Illogical （ Correct reasoning rules ） The argument of / Reasoning , You will get fallacies ; A logical argument / Reasoning leads to truth .

In essence , Logic is more like being driven by " truth " Structure of the system . The so-called logical means that there is no destruction ” truth " The system structure of , To be illogical is to destroy " truth " The system structure of .
Logic is essentially a kind of “ truth " The embodiment of the law , Something that people think is reasonable or reasonable 、 Behavior 、 The process 、 The conclusion and so on are regarded as logical , Otherwise it will be regarded as illogical .

“ Logic ” Four common meanings ：
1. It refers to the laws of objective things . for example ：“ Trick or treat , Failure , Make trouble again , Fail again , Until death —— This is the logic of imperialism and all the reactionaries in the world in dealing with the cause of the people .”
2. Of a particular theory 、 A point of view or way of looking at a problem . for example ：“ The invaders followed the robber logic ”
3. It refers to the law of thinking 、 The rules . for example ：“ Writing an article should be logical ”,“ The concept should be clear , Judge properly , Reason logically .”
4. The science of logic . for example ：“ College students should learn some logic ”

What is the law ？
Law is the intrinsic essential connection between things . This connection is repeated , It often works under certain conditions , And it determines that things must develop towards a certain trend . Also called law .

What is abstraction ？
Through the representation of a certain kind of things, we can extract the common essential characteristics and internal essential relations of such things , And use the concept 、 principle 、 The thinking process described by thinking forms such as laws is called abstraction .

Reference resources ：
1.https://www.zhihu.com/question/20317208
2.https://baijiahao.baidu.com/s?id=1698290127740727654&wfr=spider&for=pc
3.https://blog.csdn.net/liaowenxiong/article/details/125412697