This, to me, is the definition of delusion.
Asserting a belief is a mistake, a fallacy, isn't it?
Yes. that's the difficulty I'm having. It could be restated this way from my point of view.
If you claim "I believe" doesn't mean I believe, to you, but means "I know", then our discussion become a lot more difficult. The difference between "I know" and "I believe" is the inclusion of doubt. Maybe it's a miniscule amount of doubt, but it's enough to compel the speaker to say "I believe" rather than "I know".
But why state "I believe" when in fact I have doubt? Why not just be more honest and clear and say "I am uncertain". Or, "I suspect" ... or, "I'm assuming" ... etc.,. It's illogical and confusing to 'believe' yet not fully believe. And then misleading to claim belief.
Yes, I agree, but that doesn't mean it's not useful in certain situations. Maybe another example is helpful. Maxwell's demon. I don't understand the physics behind it, but, basically Maxwell made an observation he couldn't explain. In order to continue with the math, he modeled the phenomenon as occuring with the assistance of a demon. He probably didn't believe in real demons, but, he allowed himself to use the concept as if it was real in order to complete the theory. And that theory was proven correct later and the phenomenon was attributed to quantum mechanics.
So he didn't 'believe', he just suspended his disbelief. We all do that all the time for the sake of art, science, and circumstance. I don't think that's part of the discussion about belief, itself, though.
I agree, but I would go one step further. Faith is belief put into action. You can't have faith without belief.
I disagree 100%. Faith is both
hope being acted on in the face of our skepticism. It is not belief being acted on
in the ignorance of our skepticism. And that's the key difference, - that deliberate, willful ignorance of ours or anyone else's skepticism.