How do you know? — WISDOMfromPO-MO
I don't know, and i struggled to come up with a solid answer as to why i said this because i've never actually asked myself the question. I'll provide a link to the website i'm stealing this from.
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So the question is whether or not minds invented logic or if, somehow, logic is part of the fabric of the universe (aside from minds). If there was a logic problem in the forest, would anyone solve it?
I see no reason to believe that logic would exist without human minds. We've never stumbled across logic anywhere. It's only something that humans do. However, I don't think it's really a human creation. Humans breath and their hearts beat, but it would be odd to call breathing and blood-circulation "human creations."
What we generally call logic is a refinement of stuff the human brain naturally does -- stuff it evolved to do. The refinement IS a human creation. People like Aristotle quite consciously took mental tricks we all do, codified them, cleaned them up and abstracted them. It's a little like how a hundred-meter dash has constrained the natural human propensity to run.
What we can say is that the universe has certain traits (e.g. the fact that physical lays seem to be the same everywhere) that make it useful for minds to develop logic. Those traits exist independently of humans. Logic is one of the tools we use to grapple with those traits. Mostly, we evolved the tool rather than invented it. The process of Natural Selection invented it, not us.
It's likely that primitive humans used reasoning, since even animals seem to do that: "Every time he grabs the leash, I get taken for a walk. He's grabbing the leash; therefor we're going for a walk."
You can also ask the same question about numbers. Do they exist, or is that a human creation? Certainly there can be fifty leaves on a tree without a human counting them, but the actual concept of "fifty" is a human creation.
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This outlines my line of thought when i said
Logic just is, just as is water, it goes where it goes and we are able to study it. — MPen89
But reading through the list of answers from
this website there are some very good points on the counter argument that logic is a man made thing.
Thanks for the brain ache!