I recently received a reply to my article, “Why Materialism Cannot Genuinely Explain Experience,” and I wanted to provided a detailed answer to the commenter’s questions. He writes:
“If X is (E—X) then isn’t ((E—X)—X) the same as (X—X)? And what does the notation mean anyways?”
Think of each pair of parentheses as representing a particular concept, and think of whatever is between each pair of parentheses as representing the content of said concept. The “—” symbol is used to make the distinction between certain contents internal to a concept. With regard to your other question, I think the following passage from McTaggart’s Studies in Hegelian Cosmology helps clarify what I am getting at:
“If…we tried to explain the idea of a parent merely in terms of the idea of a child, we should have fallen into a vicious circle, since we should find that the idea of a child could not be explained except in relation to the idea of a parent.” (McTaggart, Studies in Hegelian Cosmology, §69)
As McTaggart points out, the concept of “Child” cannot be understood or grasped apart from the concept of “Parent;” and so it follows that the concept of “Parent” features in the concept of “Child” as one of its conceptual contents. In other words, the concept of “Child” is conceptually sense-dependent upon the concept of “Parent.” We can represent this with the following notion. Let P represent the concept of “Parent,” and let (P—X) represent the concept of “Child.” (In this particular instance, X serves as a placeholder for conceptual content that is not itself conceptually-sense dependent upon the concept of “Parenthood.” In my original essay, X is not only a placeholder, but also the very concept that the Materialist attempts to explain Experience in terms of). If we were to explain the concept of “Parent” in terms of the concept of “Child,” then we would have to explain P in terms of (P—X). However, this cannot be done unless we first explain (P—X) in terms of ((P—X)—X); but this cannot be done unless we first explain ((P—X)—X) in terms of (((P—X)—X)—X); but this cannot be done unless we first explain (((P—X)—X)—X) in terms of ((((P—X)—X)—X)—X). And so on, and so on, ad infinitum. And this circle is clearly vicious.
Now, just as the concept of “Child” cannot be understood or grasped apart from the concept of “Parent,” so too is it the case that the concept of “Parent” cannot be understood apart from the concept of “Child.” Thus, the concept of “Child” features in the concept of “Parent” as one of its conceptual contents. And so, it follows that the concept of “Parent” is conceptually sense-dependent on the concept of “Child.” We can represent this with the following notion. Let C represent the concept of “Child,” and let (C—X) represent the concept of “Parent.” If we were to explain the concept of “Child” in terms of the concept of “Parent,” then we would have to explain C in terms of (C—X). However, this cannot be done unless we first explain (C—X) in terms of ((C—X)—X); but this cannot be done unless we first explain ((C—X)—X) in terms of (((C—X)—X)—X); but this cannot be done unless we first explain (((C—X)—X)—X) in terms of ((((C—X)—X)—X)—X). And so on, and so on, ad infinitum. And this circle is clearly vicious.
While it is the case that the concept of “Parent” and the concept of “Child” are reciprocally sense-dependent, it is not the case that the concept of “Experience” and the concept of “Matter” (i.e., the Materialist’s X) are reciprocally sense-dependent. As I say in my article:
“Further, X, as a concept, had its conceptual content and determinate meaning exhausted by facts “internal to” Experience. But this just means that X is conceptually sense-dependent upon facts “internal to” Experience; in other words, one cannot grasp or understand X without grasping or having a prior understanding of certain facts “internal to” Experience or Experience itself. On the other hand, it is clear that one can grasp or understand Experience, and facts “internal to” Experience, without ever grasping or understanding the Materialist’s X.”
In short, since the Materialist’s X is conceptually sense-dependent upon the concept of “Experience,” but the concept of “Experience” is not conceptually sense-dependent upon the Materialist’s X, it follows that Experience cannot be explained in terms of the Materialist’s X without the explanation becoming viciously circular; indeed, “the Materialist is forced by his own hand to presuppose at the very beginning of his explanation, the very presence of the phenomenon which he professes to have reached as the final result.” And so, with these clarifications out of the way, I think it is safe to say that it is impossible—in principle—for Materialism to genuinely explain Experience.