I'm also interested in a picture
Well, it is not necessary to assume that my reality is not illusory, but it is necessary to assume that this reality is consistent. It seems to me that nothing whatever could be done if I did not, and my mind is not capable of discarding this belief anyway. I expect gravity to still be functioning the same way tomorrow, and for no better reason than it has worked every day of my life, but I could never make myself believe otherwise. I might chant it to myself all I like, but I could not make myself expect so.
So, yes, we should not presume that what we see is not all a sophisticated simulation an therefore not “actual reality”, but we can not stop assuming that whatever this is will keep behaving consistently. That is the principle assumtion that we must necessarily make, simply because we can not make our brains do anything else.
I'm pretty sure we could force ourselves; in fact, isn't dreaming exactly that? Kinda irrelevant I suppose though.
I've been thinking a bit about this recently, and I guess I'll go off on a tangent about it.
One of the arguments for empiricism is "we have no evidence of it being false!" I question whether it's theoretically possible to have any evidence like that, barring "waking up" out of it and seeing, much like we do with dreams. How would we differentiate a "glitch in the matrix" (which would be evidence that this world is fake) from standard laws of the universe? The universe acts quite unintuitively in its extremes, such as with quantum mechanics and relativity. We have situations where it's possible to get different results from an experiment with the exact same input (though we can determine the probability of each result). If there were a glitch, how would we know?
You say the universe acts "consistently." I suppose that's true. But it's also true of any simulation we make ourselves; Mario going into the minus world may be a glitch, but it can be experimentally shown as consistently happening every time with the correct input.
Perhaps it would have been more of flesh and less of straw if I had better put it. “We all assume an objective reality, therefore I can not be criticized for making more assumptions.”
We should look at this another way. Let's take the subjects at hand out of the picture for a moment, and just look at the logic.
- Conclusion A is built upon Premise X.
- Conclusion B is also built upon Premise X.
- Premise X is somehow faulty.
To criticize Conclusion B, attacking Premise X is probably a good idea. However, by doing so, Conclusion A is
also undermined. So one cannot reject Conclusion B on the basis that Premise X is faulty while still supporting Conclusion A, when they're both built upon Premise X. Attempting to do so is blatant cognitive dissonance.
Back to our situation, empiricism and <insert religion here> are both built upon... well nothing actually, except "because I wanna believe it." As such, attacking a religion on its unfalsifiability while supporting empiricism (which I should remind you all of science is based upon)
despite its unfalsifiability is fallacious. You can't move the goalposts like that.
So, you either reject both or find different arguments against religion. I suggest the latter, as there are plenty of other arguments.
The point is, I may perhaps be guilty of “bullshit”, as you put it, but the religious person is guilty of MOAR bullshit. Not only does he presume that his God exists and all the other assumptions necessary to support his religion, but—even I were to assume that this is not all an illusion—he also makes all of my assumptions: there is a reality beyond himself, and this reality is consistent.
"My beliefs don't make sense, but his make even less sense!"
Well okay. I can't argue against that. But still, not the strongest argument