Are natural numbers mental abstractions?

In summary, the conversation discusses the concept of categorization and how it pertains to objects such as fruits and rocks. It also explores the idea of numbers as abstractions of things in the same category and how they can accurately predict the world. However, this topic may be more suited for a philosophy forum rather than a mathematics forum.
  • #1
FallenApple
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Say you have an orange and a banana. You can say that they are two fruits. But this pertains to the categorization of fruit, which could be considered a mental construct of a category. You cannot say that you have two yellow objects, because you really don't. Relative to the category of color, the fruits do not form a set.

Say that during a time when no humans were around, there were 10 rocks lying around at some location. It seems that this must be true. But this presupposes the concept of rock, which is a classification. The "rocks" have many other characteristics that do not overlap. You can have 5 spherical rocks and 5 block like rocks. Or 3 blue items and 7 red items, or an infinite number of other possible combinations depending on the category since there are maybe conceivably infinite many categories.

So it seems that numbers are just abstractions of things that fall into the same category. Yet they are extremely good at predicting the world, interestingly. Perhaps due to our high ability to categorize things correctly, which we defined in the first place.
 
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  • #2
FallenApple said:
Say you have an orange and a banana. You can say that they are two fruits. But this pertains to the categorization of fruit, which could be considered a mental construct of a category.
How is that different from having a banana and another banana, with the mental category "banana"?

This is a mathematics subforum, not a philosophy forum. Do you have a question about mathematics?
 

Related to Are natural numbers mental abstractions?

1. What are natural numbers?

Natural numbers are a set of positive integers that are used to count and order objects in the real world. They start at 1 and continue on in a sequence, with no decimal or fractional parts.

2. Are natural numbers tangible or abstract?

Natural numbers are considered mental abstractions because they are concepts that exist in our minds, rather than being physical objects that can be seen or touched.

3. How are natural numbers different from other numbers?

Natural numbers are different from other numbers, such as negative numbers and fractions, because they only represent whole, positive quantities. They do not include any decimals or fractions.

4. Why are natural numbers important in mathematics?

Natural numbers are the building blocks of mathematics and are used in various mathematical operations, such as addition, subtraction, multiplication, and division. They also serve as a basis for more complex number systems, such as integers, rational numbers, and real numbers.

5. Can natural numbers be infinite?

Yes, natural numbers are considered to be infinite because there is no limit to how high they can go. They continue on in a sequence without an end, and new natural numbers can always be created by adding 1 to the previous number.

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