The Nature of Number
Posted: Fri Aug 10, 2012 7:08 am
Hi all - new poster here.
One of the ideas I have been contemplating concerns the nature of number. Now, as we will see, I am not proposing to explain what number actually is. That, I believe, is actually a very difficult problem in its own right.
The points I want to make about number are simply that number is real, but that it is not material or physical in nature.
Why 'real'? Because (among other things), operations carried out on the basis of the accurate determination of numerical values have real consequences in the world. For example, if I mix the wrong amount of a substance, or calculate the wrong length of the beam in a structure, these mistakes have real consequences, such as explosions, or building collapses. Furthermore, while mathematical systems might in some ways be regarded as conventional or socially-detemined, the outcome of such calculations is not simply conventional. Number is not a 'social reality' or a fashion, again because the determination of the exact value of various measurements have obvious consequence throughout science, engineering, and commerce.
Now - why not 'material'? Well, whatever else number is, it depends on rational ability, the ability to count and to follow logical laws. (Note I am also "maths-challenged" - I was dreadful at school maths, so quite why I have become interested in this topic, I don't really know.) In any case, a number can be represented physically, obviously - by symbols, binary code, words, and so on. But the symbol is not the same as that which is signified. So what is signified? Well, crudely put, a quantity - but it might also be a relationship, or a ratio.
But the point about number is that it does exist anywhere 'externally'. It is not 'in the world'. It is only visible to a rational intelligence which is capable of counting. But to any minds capable of counting, a given number has the same value. (Although there are grey areas - perhaps this is something that can be said, at least, of real numbers and integers. 'God created the integers, all else is the work of man', someone said.)
Anyway, as I said, I am not going to try and explain what number is. Far greater minds than mine have come to grief on that topic. But I find the 'real but not material' nature of number very interesting. I also know from discussing this idea, that such an understanding is very unpopular in the current academe. It sounds awfully Platonist, and empiricism generally disdains Platonism. But there are many Platonists still around, even though they may not wear their heart on their sleeve.
Anyway, I will leave it there. I am interested to know whether anyone agrees, or disagrees, with the basic idea that 'number is real but not material'.
One of the ideas I have been contemplating concerns the nature of number. Now, as we will see, I am not proposing to explain what number actually is. That, I believe, is actually a very difficult problem in its own right.
The points I want to make about number are simply that number is real, but that it is not material or physical in nature.
Why 'real'? Because (among other things), operations carried out on the basis of the accurate determination of numerical values have real consequences in the world. For example, if I mix the wrong amount of a substance, or calculate the wrong length of the beam in a structure, these mistakes have real consequences, such as explosions, or building collapses. Furthermore, while mathematical systems might in some ways be regarded as conventional or socially-detemined, the outcome of such calculations is not simply conventional. Number is not a 'social reality' or a fashion, again because the determination of the exact value of various measurements have obvious consequence throughout science, engineering, and commerce.
Now - why not 'material'? Well, whatever else number is, it depends on rational ability, the ability to count and to follow logical laws. (Note I am also "maths-challenged" - I was dreadful at school maths, so quite why I have become interested in this topic, I don't really know.) In any case, a number can be represented physically, obviously - by symbols, binary code, words, and so on. But the symbol is not the same as that which is signified. So what is signified? Well, crudely put, a quantity - but it might also be a relationship, or a ratio.
But the point about number is that it does exist anywhere 'externally'. It is not 'in the world'. It is only visible to a rational intelligence which is capable of counting. But to any minds capable of counting, a given number has the same value. (Although there are grey areas - perhaps this is something that can be said, at least, of real numbers and integers. 'God created the integers, all else is the work of man', someone said.)
Anyway, as I said, I am not going to try and explain what number is. Far greater minds than mine have come to grief on that topic. But I find the 'real but not material' nature of number very interesting. I also know from discussing this idea, that such an understanding is very unpopular in the current academe. It sounds awfully Platonist, and empiricism generally disdains Platonism. But there are many Platonists still around, even though they may not wear their heart on their sleeve.
Anyway, I will leave it there. I am interested to know whether anyone agrees, or disagrees, with the basic idea that 'number is real but not material'.