3 Questions For Believers (A work in progress.)

[Jackalope]

Regarding your example - you can determine that other people react to stimuli externally similarly to how you do. Can you do so for the underlying qualia, the subjective experience of stimuli?

Yes, I can do so by analysing and comparing their subjective feelings and making some inferences based on them.

How are you planning on examining their subjective qualia? Hint: what is it about them that makes them subjective?

You are correct, however, in that we can't know with absolute certainty, but it's the only reasonable approach to take regarding gaining this kind of knowledge. So even if we all are just figments of your imagination or someone else's, our observations continually demonstrate otherwise.

That said, if the premise had been stated instead as follows:

2. Do you believe that our understanding of truth can only reasonably be determined by evidence and observation of facts, and not through any other means?

Would that be more reasonable to you?

Only a materialist monist would be likely agree with that statement. A monist idealist or duaist would not. That's part of the problem with the question, it's written from a materialist's point of view - and no theist is a material monist. They aren't going to agree, pretty much ever.