Time to lay this rhinoceros to rest. If you accept that atheism describes the person who has no interest in, no knowledge about, or no particular belief about god, then atheism cannot be described as a "default position" on a scale of beliefs.
Oh no, this rhinoceros is well alive and charging trust me, but let's discuss it anyway.
Default: Amongst a mess of options, the default is the option that will obtain if the chooser does nothing.
Thing about this: belief isn't an act. It's not something we do, and especially not something we choose to do. It's a description of the world, nothing more, nothing less.
Already you face a huge problem, your definition of something that is "by default" is false.
What is by default, is what amongst a mess of options doesnt change without any external/internal actions.
Then you define belief as something else than an action which does seem like a cope out but we'll let it slide (this is no attempt at poisoning the well by the way, just saying "To believe" is not "to do something" seems strange to me but, hey, why not ?)
Even if we dont consider belief as an action from the subject, it is still a world view that was taught by his parents or that was adopted by himself, therefore the state before any reasonnement on belief would be the default position.
What would be the default position then ?
A hundred percent untouched Agnosticism. Doubting everything, studying the facts on each sides. Making no claims what so ever.
So the default position is pure agnosticism, problem now:
You know nothing, believe nothing.
Here are the claims.
- There is no god.
- There is a God, his name is Jesus.
- There is a God, his name is Yawhe.
- There is a God, his name is Allah.
- There are many Gods, all written in Hnduism
- There are many Gods ... Etc.
Among this claims only one Stands out. Absence of deity.
But it does not say anything FOR the beliefs in that claim.
So let's examine what each claims have in their favor:
- There is no God: We have no proofs of a creature that reassembles an external, all powerfull, all mighty, all knowing being, therefore we can say such creature is not real until further proofs.
- There is Jesus: Bible, ancient books, no contemporary accounts, no actual proofs.
- There is Yawhe: Torah, ancient myths, no contemporary historical accounts, no actual proofs.
- There is Allah: See above.
- There are many Hindu Gods: See Above.
But what we know is that:
- Many old religions are now widly considered myths but they had the same "proofs" as the actual ones.
- Many actual religions are considered false by practicians of other religions while they hold the same "proofs".
So rejecting 99% of religions is something most humans do.
We do not need proves to adhere to atheism for the logic behind science is something is false unless it is proven otherwise (that's why we dont debate for hours on the existence of the Loch Ness monster).
Therefore the default position is Pure Agnosticism, but the logic position is atheism.
Take the world.
The world is the case.
If we wish to examine truth or untruth, belief or doubt, certainty or uncertainty about the world, then we must hold the world distinct from those things we wish to examine. Hence, we will refer to it, and all its parts, as "the case."
The world is the case, and of the case things may be true or false, hence they may be believed or doubted, with degrees of certainty or uncertainty.
If I say, "I believe George went to the store," that lends it uncertainty. It says that because of insufficient knowledge there may some amount of doubt about George's activities, but still I have a degree of certainty about it. Similarly, to say, "I don't believe George went to the store," is to assert its uncertainty. Belief is the case described in such a way as to hold a degree of certainty.
If I say "George went to the store," then asserting the truth of that lends it a face that says there is no doubt, no uncertainty about George's journey. Truth is the case described as apart from me, apart from the certainty a consciousness might know.
That's because a consciousness is distinct from the world it knows.
The default is the option that will obtain if the chooser does nothing. The world is the case.
Both asserting a degree of certainty to the world and describing it as apart from me, apart from any degrees of certainty, are things we do. They are dong something, not nothing. Where the default is the option that will obtain if the chooser does nothing, asserting belief and truth--and their counterparts disbelief and falsehood--about what is the case are doing something.
In discussion, we do not fail to do something about the world.
True the atheist does not fail to say something about the world unlike the agnostic, but he says the most rational thing about it.
It's a little like saying:
I believe George went to the store.
What makes you think that?
People told me he did.
And on the contrary.
I dont believe George went to the store.
What makes you think that ?
I checked the store, he wasnt in any of the alleys. And his shoes are still home.
The second one is more reasonable than the First. Also both assert a claim. Therefore we will for now conclude Georde did not go to the store, until further investigations.