Questions tagged [abstract]

44 questions
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Why is it said Second Order Logic commits oneself to abstract objects but not FOL?

I would like to understand why SOL and FOL differ on being committed to abstract objects. It seems one difference is the existence of classes for SOL. Can classes not be made concrete? It seems like Field succeeded in something like that. I don’t…
J Kusin
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Why is action abstract?

I can see someone dancing, I can see someone’s motion, I can smell something burns, I can feel air moves. However, why is action abstract?
user0229
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Are object categories abstract?

I am not a philosopher by any means, so maybe I am using some words incorrectly — i.e. I am not sure what the difference is between "conceptual" and "abstract". Please correct me if I am wrong. I've been trying to prove a point that we think in…
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How to understanding abstract things easily?

I didn't say I don't understand any abstract things. I know few but I'm hardly to understand until there's instance of that abstract thing. For simple example, a "line segment" in geometry term is actually not exist in this universe because there's…
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Isn’t ‘color’ itself an abstract noun?

An abstract quality such as the color “green” will never change! ... we would normally say that the object's appearance has changed rather than the object itself. I also think that color is intangible and a paint (thing) is concrete but a color…
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Can we indicate abstract quality or attribute with a finger?

Can we indicate abstract quality or attribute with a finger? or can we only indicate concrete things with a finger? I’m serious.
alice
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