Whoa! Brainwave! I think I've figured out a scenario/experiment that could provide reliable evidence for or against the existence of a creator deity; However it only applies if that creator deity is at least to some degree fallible. To wit, if the world was created by an omnipotent but fallible creator there could be fundamentally unresolvable inconsistencies* in things such as the laws of physics and the general laws as they operate on different scales or settings, analogously to how the mechanics of fortress mode in Dwarf Fortress cannot be derived from just looking at the mechanics of world-generation.
No, not really. It's possible for an infallible deity to create something that's flawed, or at least flawed by our standards.
Honestly, your argument is a little confused here. First it sounds like you're arguing that you can disprove the existence of a fallible deity, but then you go on to sound like you're arguing that you can prove a deity is fallible.
At any rate, saying that an infallible deity (whatever that means; remind me why we aren't defining terms here?) can't create something fallible implies too much about that deity that we can't readily assume. Why shouldn't an infallible deity be able to create a universe with inconsistencies in its rules? Hell, isn't that basically the definition of a miracle?
Test a if A then B statement is true of false, you only need to test if B true or not when A is true, when A is false you don't need to test B at all, the statement if A then B, always true. And it only test the
"causality" between A and B, Nothing to do with the true of false about A. When the world is flawed or flawless, and there is not creator, or its infallible, all makes A false, but the statement if A then B stays true.
Only you accepted the assumption of existing creator AND its fallible in the first place, than the test can determine the causality of A->B true of not. That is a fallible creator exited and we observed a flawless world, then it will shock us. That will be a true miracle. Sometime fallible creates a flawless thing.
PS. about the analysis of if A->B, All the below is what need to be analysis, let's see these statements:
1. there is no creator, the world is flawed, need to be true, no problem here, check.
2. there is no creator, the world is somehow flawless, need to be true at the same time. I don't know how, but it can be. check.
3. there is a creator, and he is infallible, but he purposely create a flawed world, toying with us. It can be true. but I will not say anything about the creator's character. check
4. there is a creator, and he is fallible, the world is flawed, true, it's an obvious statement. check.
5. there is a creator, and he is fallible, the world is flawless, need to be false, and obviously is a contradiction statement itself. check.
Then we get a statement about causality of if A->B true. If you think the implication about this statements above, you won't feel it's a causality worth mention. (Or you want to, because may lead to the funny conclusion that God is simply playing us), you can't test the assumption true of not from its implication statement.