Which is where atheism comes in and the only way to rationalise that is with science? As FredLC so neatly avoided answering though science is not applicable to philosophy, because it needs some sort of evidential basis to work on, thus the most logical conclusion is that you cannot know.
Agnosticism is the most rational if not the best system, and in fact the only real system of non-belief inherently.
Now there is some truly Sidhe-centered version of the facts. If any brave soul cares for a review of a few pages, feel free to check the threads
Ask an Agnostic and
Explain Why you don't believe in God and see the true avoid-to-answer relation happening there. A long path but sure a fun one.
Now for shorts, here is -
again - my whole response in a nutshell.
Agnosticism is
almost an philosophically consistent answer, sure enough. This does not make it the best answer, by a longshot, for philosophy allows for
unreasonable doubt in it's lucubrations. That is what makes philosophers so troubled with rhetoric questions such as "do I really exist?", or "is there a world outside my cave?".
In that, agnosticism seems like a particular case of
Pyrrhonic skepticism, and the only reason why theirs chosen
ataraxia does not translate into bad consequences is because, much to the reinforcement of my soon-to-be-made atheism defense, the "God" hypothesis is rather immaterial.
But as far as that goes, agnosticism is even worse than pyrrhonism, for, unpractical as it is, the ataraxia proposed by Pyrrho is at least internally consistent, for it applies for
all knowledge. My beef with the consistency of agnosticism is that it does not disqualify the possibility of empiricism to attain information of the surroundings, but, just because the proponents of God
arbitrarily defined an divine existence that aprioristically cannot be felt by sensitive means, they pay homage to that definition and decide that
just for that particular case, induction should be deemed insufficient and ignored.
The downfall of agnosticism as a position is, than, it's inconsistency, for allowing someone to live a life of empirically sound determinations, and than deciding that part of their world view cannot be empirically validated (or invalidated) just because someone else said so.
When someone defines "agnosticism" as the position that no knowledge of first principles can be obtained, he always forget to say
why first principles should be different than anything else - which are the mechanism justifying this conclusion.
As for atheism: I'm the very first to say that,
for current human knowledge, strong atheism is a position that requires as much faith as theism, for it claims a knowledge that is not yet obtained.
However, as an weak atheist, I feel that the lack of the perfect knowledge is not an excuse to refrain from concluding. I feel that the inconsistency of the models of God, as well as the ever-growing deciphering of natural processes allow for the reasonable extrapolation that the coming-to-be of the universe may not be a volitive work, but a
blind event, and as this is the simplest thesis (for it requires a smaller interaction of factors - one God 'less"), this is a conclusion determined by the principle of parsimony.
Now, as a philosophically consistent idea, this accepts the possibility of being wrong, the uncovering of complexities that cannot even in thesis exclude a "maker" - but this demonstration is extraordinary, and no one has provided it.
I also call for a pragmatical edge of atheists. Not in how we live our lives, for agnosticism's ataraxia guarantees a pretty alike response to life facts - but in the arrival of our conclusions. As we very well admit, even though perfect knowledge is impossible, we accept that it's practical to respond to the clues of our senses, and postulate them as
basically correct. that is why no skeptic doubts the existence of elephants, supermodels and vanilla ice cream - our senses
attest their existence (as for supermodels, hopefully tact

).
As for God, no sensorial experience is available (only subjective experience). As so, I discredit it, the same way I would discredit someone saying that there is a box around my keyboard right now and that I'd be unable to type - that simply contradicts the response i'm getting from reality around me.
I'm sorry, but when someone says that there is something out there, that cannot, even in thesis, be sensed in any objective manner whatsoever, but it's there and i should take his word for it, I don't feel it's absurd, at all, to discredit it. As I said before, this here is where I diverge from agnostics - why they render any credibility to that claim, and accept the rules imposed by the theist (this here cannot be felt in any way) is an inconsistency with how they otherwise live their lives, and i see no manner to defend it.
In the end, Sidhe will probably say, as he did other times before, that "science and philosophy don't mix". Well, sorry, Sidhe, but while empiricism is a tool of the scientific method, it's also a philosophical concern since ancient Greece, and numerous worldly-renowned names did dig into it, such as the likes of Aristotle, Plato, David Hume, Emmanuel Kant, Karl Popper.
Even if it wasn't, if you feel like defending that to combine forms of knowledge as means to reach conclusions is wrong somehow, good luck - as I said before, painting, metallurgy and architecture are unrelated disciplines, but they are all fundamental in constructing buildings.
Oh, Sidhe will also probably argue that I'm a lawyer (hence what I say is not to be trusted, for we all know that lawyers can't make sincere arguments, don't we?), and that this post is a form of foul play (that somehow I'm saying nothing of relevance to the topic and using pretty words to mislead people). I guess this, such as the claim that I once had "neatly avoided answering him" before, is a matter that will have to be decided on personal bases by every reader.
Regards

.