As suspected the epistemology thread brought up the issue of metaphysics. I am setting up this thread which can hopefully operate in parallel to the other thread. Instead of laying out a sweeping proof like I attempted last time, this time I will start with a more concise summary of the metaphysical position of objectivism. Since ethics is built on metaphysics and epistemology, and politics is built on ethics - it seems like these issues have value in a Paw-litics forum despite the lower rate of participation on these threads.
Here is the summary of the position:
The base of Objectivism is explicit: "Existence exists—and the act of grasping that statement implies two corollary axioms: that something exists which one perceives and that one exists possessing consciousness, consciousness being the faculty of perceiving that which exists."
Existence and consciousness are facts implicit in every perception. They are the base of all knowledge (and the precondition of proof): knowledge presupposes something to know and someone to know it. They are absolutes which cannot be questioned or escaped: every human utterance, including the denial of these axioms, implies their use and acceptance.
The third axiom at the base of knowledge—an axiom true, in Aristotle's words, of "being qua being"—is the Law of Identity. This law defines the essence of existence: to be is to be something, a thing is what it is; and leads to the fundamental principle of all action, the law of causality. The law of causality states that a thing's actions are determined not by chance, but by its nature, i.e., by what it is.
It is important to observe the interrelation of these three axioms. Existence is the first axiom. The universe exists independent of consciousness. Man is able to adapt his background to his own requirements, but "Nature, to be commanded, must be obeyed" (Francis Bacon). There is no mental process that can change the laws of nature or erase facts. The function of consciousness is not to create reality, but to apprehend it. "Existence is Identity, Consciousness is Identification."
The philosophic source of this viewpoint and its major advocate in the history of philosophy is Aristotle. Its opponents are all the other major traditions, including Platonism, Christianity, and German idealism. Directly or indirectly, these traditions uphold the notion that consciousness is the creator of reality. The essence of this notion is the denial of the axiom that existence exists.
In the religious version, the deniers advocate a consciousness "above" nature, i.e., superior, and contradictory, to existence; in the social version, they melt nature into an indeterminate blur given transient semi-shape by human desire. The first school denies reality by upholding two of them. The second school dispenses with the concept of reality as such. The first rejects science, law, causality, identity, claiming that anything is possible to the omnipotent, miracle-working will of the Lord. The second states the religionists' rejection in secular terms, claiming that anything is possible to the will of "the people."
Neither school can claim a basis in objective evidence. There is no way to reason from nature to its negation, or from facts to their subversion, or from any premise to the obliteration of argument as such, i.e., of its foundation: the axioms of existence and identity.
Metaphysics and epistemology are closely interrelated; together they form a philosophy's foundation. In the history of philosophy, the rejection of reality and the rejection of reason have been corollaries. Similarly, as Aristotle's example indicates, a pro-reality metaphysics implies and requires a pro-reason epistemology.