BTJH74 wrote:Hi, I am somewhat troubled with the concept of what is abstract and what is concrete.
Here is my thinking.
We can agree that anything one dreams in their sleep and describe it thereafter are 'abstract thoughts'.
What one sees within their view are concrete objects.
Hi. I'd say you're using the word "concrete" here to mean roughly the same thing as the word "real", as an antonym for "abstract". Concrete/real things are those that exist independently of minds. Abstract things exist in minds. Concrete/real things can exist when minds don't. Abstract things can't.
It seems to me that a lot of confusion can be caused as a result of the fact that abstract concepts can
refer to real things, that it's
possible that there are no real things (solipsism), and that we only have evidence of the existence of real things via our senses. This sometimes seems to result in people mistakenly thinking that because our only
knowledge of the real/concrete is via the abstract, then the real/concrete is itself abstract. But it isn't. Even if we took the solipsistic view that there is no real world, that wouldn't change the definition of the word "real". It would still refer to a putative real world.
So, with that in mind, yes I agree that my dreams are abstract. Dreams, by definition, can't exist without minds. I also agree with the statement "What one sees within their view are concrete objects" if we're clear about what that sentence is saying. It's not saying that the "view" or the "perception" is real. It's saying that the object we assume to exist as a result of that perception, if it existed, would be classed as real. If it turns out that it doesn't exist it's still classed as real. It would stop being classed as real if we stopped classing it as such, perhaps by saying something like "Ah! It's just an illusion."
Let's say, person A sees this other person B directly in front of themselves. Person B is concrete because he is directly in front of Person A's eyes.
No, I disagree. Person B is not concrete/real
because he is directly in front of Person A's eyes. He is concrete/real by definition. We see a person. We postulate that that act of perception is due to the presences of a real thing (a person). That putative thing is real. The postulate isn't.
As soon as person A closes their eyes and the person B remains directly in front of A, the person B becomes an abstract because person A, whenever describing person B is coming from person A's thought.
Does this make sense?
No, it doesn't make sense given what I've said above, although it might make sense to someone who disagrees with what I've said above.
Person B doesn't become abstract just because A closes their eyes. He merely becomes unsensed by A. Part of the postulate "I see a real person in front of me", as a result of the definition of the word "real", is that when I close my eyes they don't disappear as a result of me doing that.
Another example: Let's say Person C went to a museum and saw a painting there (the painting is concrete because its there and was seen by Person C). The next day, Person C describes the painting at the museum from memory. Is this abstract or concrete?
The description is abstract. The memory is abstract. The painting is real.