Originally posted by telerion
It seems that at some point there must be mutual agreement as to the definition of the most fundamental concepts. Without this, we will talk past one another. For just as HolyT has made explicit, in the absence of consensus, one can always appeal to a different presupposition.
While the exercise of identifying our assumptions and contemplating altern ...[text shortened]... ssumption that things external to our minds exist and continue from there.
Seem reasonable?
Okay, I’ll give it a go—
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Axioms and Corollaries.
A1: A world exists external to our minds.
—I do not take existence as a property/attribute. In other words, it is not “
Ex Ex”—“There is some x such that x exists”—but rather, either
Ex or ~
Ex. x is either instantiated in the world, or not.
[Note: I have not figured out how to type a proper upside-down
E for the existential quantifier.]
A2: “The world is everything that is the case.” (Wittgenstein,
Tractatus, 1)
—Alternative formulation: “The universe is the totality that has no edge.” (scottishinnz)
Corollary: There is no supernatural [extra-natural] category that warrants consideration.
—I view the introduction of a supernatural category as an unnecessary and unwarranted metaphysical leap. If there is such a supernatural category, whatever knowledge we can have of it is only as , and insofar as, it might be expressed within, and subject to the rules of, the natural world. To paraphrase from Wittgenstein again (the “later” Wittgenstein), when one reaches that metaphysical boundary-line, the trick is—to stop. Not to leap.
A3: “The world is the totality of facts, not of things.” (Wittgenstein,
Tractatus, 1.1)
—I intend this simply to obviate the need to address such questions as substance ontology versus process ontology, etc.
A4: The world is coherent.
—As opposed to chaotic; i.e., the world is characterized by having a “syntax.” Else we have no epistemic access at all.
A5: We perceive/experience the world representationally. (Representational realism.)
—For example, visual sense-data is transferred from our eye, via the optical neurological apparatus, to the visual cortex, which forms, as it were, a picture. The picture—the visual representation—is what we see. If that picture is exhaustively accurate, then this version of representational realism would seem to reduce to direct realism.
A6: What we can know of the world, we can know through empiricism (experience/observation) and reason.
Corollary: Rejection of metaphysical idealism.
Caveat: See Corollary A7(iii) below.
A7: Knowledge is derived from the application of reason to empirical data.
Corollary (i): Such things as faith have no epistemic value.
Corollary (ii): Knowledge (
episteme) is not given. The world (universe) discloses facts, patterns, relationships. Interpretation and explanation derives from the application of reason to such.
—Or, as I like to put it, knowledge (and meaning) is obtained by application of the “grammar of our consciousness” to the “syntax of the world.” What lies outside the grammar of our consciousness, we cannot know.
Corollary (iii): It seems difficult to know how much of our perception itself is imposed by the grammar of our consciousness versus simply disclosed to it. For example, is time-space dimensionality a feature of the universe, or a pattern imposed by our consciousness (Kant, I believe)? I opt for the former, but am not wedded to it.
—Here, the whole thing may become fraught with issues of self-reference, since the grammar of our consciousness is itself part of the syntax of the world.
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These axioms are intended in the sense that, as Dr. Scribbles put it, “An axiom is any proposition serving as a standard of truth within some universe of discourse.”
See: http://www.redhotpawn.com/board/showthread.php?threadid=65825 (“Calling Out the Logical Lion (Dr.S.)” ) for the Good Doktor’s exposition.
This seems to be in line with what you are getting at.
EDIT: I include under empiricism (empirical/experiential data) the conscious but pre-conceptual existential experience (e.g., Zen).
EDIT: I did a rearrangement as an after-thought; apologies if anyone was reading this while I did so.