Thank you for the links to interesting studies, and for teaching me a bit of jargon. I mostly thought about discreteness (or “object individuation”) as a prerequisite for mathematical thought in the context of the philosophy of mathematics, a few years back when I was keenly interested in Platonism vs formalism and related issues, and read some sources in that field. I didn’t know it was studied in the context of the development of the infant mind, although in hindsight that seems a perfectly logical thing to study.
So you could be right, but I think that while object individuation is a necessary condition for the development of mathematics, it doesn’t seem to be sufficient.
My vague idea is that once what you call object individuation is available, it is only “raw intelligence” and object memory that are needed to hold several objects in one’s mind and develop their numerical properties (see below for a sketch). I’m using “raw intelligence” here in a naive (and probably unhelpful) sense, and with the caveat that even though humans generally possess enough of it to develop mathematical thought, the degree to which they do is clearly influenced by culture. For example, cases of indigenous languages with no numerals beyond 3 (one, two, three, lots) have been firmly established by linguists; we can’t prove that their speakers have no distinct mental notion of “10”, but it seems likely.
I can’t rule out that the right elucidation of what I just called “raw intelligence” w.r.t. developing math is actually combinatorial/recursive syntactic ability, as you suggest; but neither do I see the connection as obvious. By the way, in the above examples, the indigeneous languages are of course as complex as all human languages generally are, and yet their speakers seem to only engage in what’s at best an extremely reduced form of mathematical thought.
Also, to further clarify what I mean by “syntax”, I would include in (as the key feature) an evolved faculty of syntax the ability to think in combinatorial/recursive terms,
Can you spell out more suggestively what you actually mean by this? That is, can you give some examples of sentences (or thoughts, since you’re talking of an ability to think; are you referring to the inner-monologue kind of thoughts here? - because if not, the connection to “syntax” becomes somewhat tenuous, I think, or at least worthy of further elucidation) that exhibit what you call combinatorial/recursive properties, and suggest, even if very crudely, how they hypothetically transform into mathematical thinking?
At the very least, I don’t see how object individuation alone can give rise to mathematics.
Numbers could arise from pairwise matching, I think. Let’s assume I can hold separate objects in my mind and understand them to be separate. I then go on to develop the habit of matching, in my mind, groups of related objects one-to-one to make sure that there’s enough of something (e.g. I kill three birds to feed my three children; at first I may need to haul the dead birds and place them next to the children to be able to mentally pair them off, but after enough training I can hold the children individually and together in my imagination w/o seeing them in front of me). The next (admittedly huge) step is matching arbitrary objects to keep count, e.g. I set aside a stone for each sheep I let out of the fold, match again when they come back to see if any’s missing. The next step is creating a reference sequence in my mind, and so on. I’m not sure I actively needed recursive syntax at any point so far—have I?
First, I want to be clear that the “statistical set of regularities” I’m talking about isn’t at the level of language or grammar recognition/learning. When I say statistical set of regularities I’m talking about the “object” level. Whatever allows you to discretize apple as something in particular in your environment.
I think I’m confused as to what you mean by “statistical set of regularities” on the “object” level. Whatever it is that allows me to discretize an apple from other stuff around it doesn’t seem to automatically let me distinguish 9 apples from 10 apples.
Also, I don’t know if I’m going as far as denying ontological status to “10”, and even if I were, I’m having trouble figuring out the point of your experiment or how it relates to my position.
I phrased that poorly. I meant to say that you’re denying ontological mental status to “10”. That is, it seemed from your description that you didn’t believe that there is something in the map of mental concepts of each individual human that can be said to represent “10″, but only that humans who communicate with each other will have shared experiences that will cause them to assign a particular word to represent one of those experiences. As you said,
It seems like counting is really just a method for attaching a token that points at a space of possible meanings, or more realistically, a token that picks out a fuzzy parameter representing a subjective impression of a scenario.
Whereas I think that while this is true, we can go further and state that that there’s an “objective” (in the sense of, at the very least, applicable to all humans) impression of experiencing 10 objects such that each individual human’s subjective impression is a very good approximation of it. I think we can state that because words used to express individual subjective impressions will stay highly consistent over time even between mutually incomprehensible languages and cultures not in contact with each other. The analogy seems strong with other kinds of words that denote “objective-mental” properties such as colors.
So you have more or less the same problem, correct? I don’t really feel like I have a nice answer to it. How do you account for this issue? [...] I don’t know what it would mean to “query” the “Platonic realm”, nor do I know what the “world of platonic ideas” is supposed to be or what its actual relation to the physical world is.
Right; neither do I, and I can’t really answer these questions. The best I can do is to suggest that mathematical thinking flows as a necessary consequence out of a notion of a discrete sequence, and that flows as a necessary logical consequence out of a notion of an individual object that’s distinct from another individual object; and that given two humans who have evolved an ability to individuate objects, they will have access to the same “Platonic realm” of elucidating the extremely rich, but “objectively” necessary, logical consequences of that ability. I don’t think I’ve successfully eliminated dualism here, maybe only draped it over a bit, but that’s the best I can do for now.
Thank you for the links to interesting studies, and for teaching me a bit of jargon. I mostly thought about discreteness (or “object individuation”) as a prerequisite for mathematical thought in the context of the philosophy of mathematics, a few years back when I was keenly interested in Platonism vs formalism and related issues, and read some sources in that field. I didn’t know it was studied in the context of the development of the infant mind, although in hindsight that seems a perfectly logical thing to study.
My vague idea is that once what you call object individuation is available, it is only “raw intelligence” and object memory that are needed to hold several objects in one’s mind and develop their numerical properties (see below for a sketch). I’m using “raw intelligence” here in a naive (and probably unhelpful) sense, and with the caveat that even though humans generally possess enough of it to develop mathematical thought, the degree to which they do is clearly influenced by culture. For example, cases of indigenous languages with no numerals beyond 3 (one, two, three, lots) have been firmly established by linguists; we can’t prove that their speakers have no distinct mental notion of “10”, but it seems likely.
I can’t rule out that the right elucidation of what I just called “raw intelligence” w.r.t. developing math is actually combinatorial/recursive syntactic ability, as you suggest; but neither do I see the connection as obvious. By the way, in the above examples, the indigeneous languages are of course as complex as all human languages generally are, and yet their speakers seem to only engage in what’s at best an extremely reduced form of mathematical thought.
Can you spell out more suggestively what you actually mean by this? That is, can you give some examples of sentences (or thoughts, since you’re talking of an ability to think; are you referring to the inner-monologue kind of thoughts here? - because if not, the connection to “syntax” becomes somewhat tenuous, I think, or at least worthy of further elucidation) that exhibit what you call combinatorial/recursive properties, and suggest, even if very crudely, how they hypothetically transform into mathematical thinking?
Numbers could arise from pairwise matching, I think. Let’s assume I can hold separate objects in my mind and understand them to be separate. I then go on to develop the habit of matching, in my mind, groups of related objects one-to-one to make sure that there’s enough of something (e.g. I kill three birds to feed my three children; at first I may need to haul the dead birds and place them next to the children to be able to mentally pair them off, but after enough training I can hold the children individually and together in my imagination w/o seeing them in front of me). The next (admittedly huge) step is matching arbitrary objects to keep count, e.g. I set aside a stone for each sheep I let out of the fold, match again when they come back to see if any’s missing. The next step is creating a reference sequence in my mind, and so on. I’m not sure I actively needed recursive syntax at any point so far—have I?
I think I’m confused as to what you mean by “statistical set of regularities” on the “object” level. Whatever it is that allows me to discretize an apple from other stuff around it doesn’t seem to automatically let me distinguish 9 apples from 10 apples.
I phrased that poorly. I meant to say that you’re denying ontological mental status to “10”. That is, it seemed from your description that you didn’t believe that there is something in the map of mental concepts of each individual human that can be said to represent “10″, but only that humans who communicate with each other will have shared experiences that will cause them to assign a particular word to represent one of those experiences. As you said,
Whereas I think that while this is true, we can go further and state that that there’s an “objective” (in the sense of, at the very least, applicable to all humans) impression of experiencing 10 objects such that each individual human’s subjective impression is a very good approximation of it. I think we can state that because words used to express individual subjective impressions will stay highly consistent over time even between mutually incomprehensible languages and cultures not in contact with each other. The analogy seems strong with other kinds of words that denote “objective-mental” properties such as colors.
Right; neither do I, and I can’t really answer these questions. The best I can do is to suggest that mathematical thinking flows as a necessary consequence out of a notion of a discrete sequence, and that flows as a necessary logical consequence out of a notion of an individual object that’s distinct from another individual object; and that given two humans who have evolved an ability to individuate objects, they will have access to the same “Platonic realm” of elucidating the extremely rich, but “objectively” necessary, logical consequences of that ability. I don’t think I’ve successfully eliminated dualism here, maybe only draped it over a bit, but that’s the best I can do for now.