Is logic universal or subjective?

subjective...





there is no definite other than Man%26#039;s interpretation of it...
Is logic universal or subjective?
Logic is meaningless unless applied to a subject.





But I would consider the principal of logic to be universal.





The universe is fire %26amp; logic.
Is logic universal or subjective?
Your question is very vague, and my answer must then be as well.





Logic is a human invention into greater objectivity of cause and effect. In general, if we have a concept %26#039;c%26#039; that we speak about, the way another individual can understand %26#039;c%26#039; is by us describing the objective qualities and letting the individual interpret these qualities. Thus, logic forms the objective interpretation of our thoughts and allows for easy communication, BETWEEN HUMANS.





However, if you mean %26#039;universal%26#039; between humans, I may agree. However, there is subjectivity to logic, because it was invented from a human point of view. If we took, for instance, an animal such as a bat that could speak english, the bat may not be able to understand because of the subjective nature of the argument i.e. because logic was built for the human brain construct to interpret and understand, and not any other.
Reply:Logic is as objective as math. Man thinks and speaks in syllogisms, or in parts of them. When you answer a question, your answer is the conclusion of a syllogism--or many syllogisms- that your mind had to go through to get the answer, which is called a %26quot;conclusion.%26quot;





There are 256 forms of syllogisms. Aristotle formulated them, and no one has come along to dispute that number. He formulated the means by which they work--in any language. He formulated the mere 15 of the 256 which are %26quot;valid.%26quot;





If it can be stated there are 256 forms, and only 15 are valid, that is pretty objective.





http://phil240.tamu.edu/LectureNotes/6.1... See page 5 for the valid forms.


http://www.philosophypages.com/lg/e08a.h...


http://miles.cas.buffalo.edu/classes/psy...


http://www.iep.utm.edu/v/val-snd.htm
Reply:ask SPOCK.com
Reply:Lee p,I wish I had said that.
Reply:IT depends on what you mean by the term %26#039;logic%26#039; most laypersons just mean, by the word %26#039;logic%26#039; that it is a way of comming to conclusions.





However, %26#039;Logic%26#039; properly understood is a formal method of inference. The %26#039;logic%26#039; we use, especially in semantics, linguistics, philosophy, and mathematics, is a formal method that mathematicians use to establish conclusions in their proofs.





Here is a very simple and commone Proof that employs the inference rule Modus Ponendo Ponens:





1. If P then Q.


2. P.


Therefore,


C. Q.





The premises (1) and (2), by virtue of their logical form, necessarily entail (C). That is, if the premises (1) and (2) are both true, then it is completely impossible for the conclusion (C) to be false. Another way of saying this, in regards to the simply proof above, is that (C) is true by virtue of modus ponens on (1) and (2).





___





Logic is only %26#039;subjective%26#039; in the sense that it literally %26#039;happens%26#039; or takes-place in the mind of a being capable of understanding reasoned inference.





Logic is %26#039;objective%26#039; in the sense that anything capable of understanding reasoned inference, if confronted with a logically valid and sound argument - for the sake of %26#039;rationality%26#039; they must except the conclusion (again, if all the premises are true in the deductively-valid argument being put forth, then the conclusion must follow of necessity).





Logic is, probably, the most %26#039;objective%26#039; piece of understanding in terms of %26#039;universality%26#039; that we humans have. IF logic were not this, it would not even make sense to reject anything on any basis, for it is %26#039;logic%26#039; that even allows such a process to be coherent.





___





Again, I cannot stress the idea that if one believes %26#039;logic%26#039; to be %26#039;subjective%26#039; in the sense that %26#039;it is not true independent of peoples feelings%26#039;, then they must reject all of mathematics as a mere %26#039;subjective%26#039; affair, for mathematics is formally built upon formal- logic and set-theory (which is an extension of formal-logic), and mathematics seems to be the best description of the world, or the universe for the matter, that we humans have. So, if formal-logic turns out to be subjective, in the aforementioned sense, then mathematics will also turn out to be subjective in that very sense as well. And, if all of that happens, then the world is basically either imcomprehensible in it%26#039;s entirity, or else %26quot;what - we -think -we -know -about - the - world%26quot; is very, very wrong, even simple trival facts like, %26#039;I am a man,%26#039; or %26#039;I exist,%26#039; or %26#039;I am not both dead and alive right now%26#039; would be completely unfounded.





So, I must say that logic - as it has been understood for the past 3,000 years, is the precursor to all-other sciences and forms-of-understanding.





I once read that %26#039;logic%26#039; is considered the %26#039;first-science%26#039; from which everything else is built up from.





(Hope this helped) and please see the sources for help, especiall the %26#039;google books%26#039; one.





Thanks!
Reply:Logic is very subjective. Your logic is formed by your life experiences. If you were raised a cult, you would not object to getting married at a young age to a sixty-year-old man as you would think that it was the norm. However if you were a child who had grown up in suburban Pennsylvania, you would object to getting married to a man five times your age because your life experiences tell you that it is wrong.