disputing someone's stated beliefs without reason
Ah, thank you.
Well what's the term for when the other party can't be convinced they're wrong no matter what? (like if someone says the sky is purple and even when you take them outside and point to it they still say purple)
Dunno, could be something like:
* Denying the correlative: where attempts are made at introducing alternatives where there are none.
* Suppressed correlative: where a correlative is redefined so that one alternative is made impossible.
Could be related to:
* Appeal to probability: assumes that because something could happen, it is inevitable that it will happen.
* Argument from fallacy: assumes that if an argument for some conclusion is fallacious, then the conclusion is false.
* Bare assertion fallacy: premise in an argument is assumed to be true purely because it says that it is true.
* Base rate fallacy: using weak evidence to make a probability judgment without taking into account known empirical statistics about the probability.
* Nirvana fallacy: when solutions to problems are said not to be right because they are not perfect.
* Proof by example: where examples are offered as inductive proof for a universal proposition. ("This apple is red, therefore all apples are red.")
Though I'd go with:
* Negative proof fallacy: that, because a premise cannot be proven false, the premise must be true; or that, because a premise cannot be proven true, the premise must be false.
Actually, it could easily be attributed to this:
* Moving the goalpost (raising the bar): argument in which evidence presented in response to a specific claim is dismissed and some other (often greater) evidence is demanded
Basically, it's a shitload of fallacies.