Consciousness and its identifications are the source of all the knowledge that we have, objective or non-objective. So whether we like it or not, that's it. It may or may not be sufficient, but there is no known alternative.
If you consider it improper to use this as the sole font of knowledge, please tell me which other font of knowledge exists, other than consciousness.
Well whether or not the consciousness is capable of making objective, measured observations and judgments is integral to the philosophy of Objectivism, I should think.
I have already described what the closest thing to objective knowledge we have is. Pure objective knowledge would be math - but it can be hard to apply math to the world in any way more esoteric than "2+2=4."
Sceptical questions like that can only occur if existence exists. Without existence, we would not be able to question existence. This is the A=A part - it is simply pointless trying to question whether existence exists. It really is self-evident, and the fact that you are here and asking questions about it is proof.
What is existence? Define it.
I don't remember saying that I could define my entire way to objective truth, in any sense of the meaning. But also, what do you mean by the statement "you cannot define your entire way to objective truth"? Do you mean to a total knowledge of objective reality? If so, I have already stated that objectivism makes no claim to omniscience.
That's all well and good, so whence come the relevance of a statement like "existence exists" or "A is A?"
Also I'd like to hear what you think about Schrodinger's cat and the quantum uncertainty principle, both without objective truths re: existence (or mutually exclusive qualities such as life and death).
"Existence exists" - there is objective knowledge. It exists. And that kills your claim [which incidentally, looks like a claim to objective knowledge] that "You will find this literally impossible to prove for as long as you're human"
Objective knowledge is (roughly speaking) that knowledge that exists outside and separate from human perception. No matter what one perceives, there is that knowledge.
Aside from 2 and 2 making 4, there is little in the way of "objective knowledge" outside of an argument that validates itself through its own definitions. Even that, however, is not based on a fundamental system of hard rules and numbers, but ultimately is derived from human perceptions, which have been established to be flawed.
Please stop telling me what Ayn Rand failed to grasp if you haven't read her theories

Rand has a theory of definition and of concept formation. Relations between naming conventions or other forms of logical word-games are interesting but irrelevant [to date] to the principle of non-contradiction in its true sense.
I said earlier in the thread that I read Atlas Shrugged, and I have also read half of The Fountainhead and all of Anthem. Now, then...
Can you explain how the theory of definition and of concept formation and her tautological statements about existence existing are used to justify some of Objectivism's other notable pillars, such as man being an end in himself, and capitalism being the only moral government? Earlier in the thread, when you bring up Objectivism's pillars, you sort of gloss over this bit.
Because we already stated that "existence exists". So it must exist in some form, which means it cannot simultaneously be that form and not be that form. This applies to all different types of existence, as we move from the general "existence as a whole exists" to the specific "this leaf exists".
We may or may not recognise the leaf and its properties in an accurate way. We may mis-identify them, but we know that things don't "exist and not exist", at the same time.
The good Paradigm Shifter already responded to this quite well, so I'll leave it at that.
LordRahl said:
Civfanatics is the last place you want to be asking about Ayn Rand. You'll find that the vast majority of posters lean heavily towards the left, both socially and economically. I'd recommend
http://www.objectivismonline.net/ forums for a more mature discussion, with people that actually read her works, and understand her philosophy.
But if you want to read some funny, uninformed comments - by all means, stick around here - plenty of them in this thread already...
Just realized what your user name is.

By the gods of altruism, you don't actually like the Sword of Truth series, do you?
This post pretty much sums up why I think Objectivism is theology. Objectivists claim to have hard, marble pillars upon which their entire philosophy is rationally stacked, but if you point out the pillars are constructed on a foundation of mud, it's because you're a "statist" or a "parasite" who simply can't understand and they zealously defend against all critique. Pretty much no other philosopher in history is defended like this, but almost all religions are. Makes ya' think.
