There must be a distinction between what I think is given in perception and what is actually given in perception, just as there is a distinction between what I think is on the menu at Sizzler and what is on the menu at Sizzler. What is actually given in perception is what you actually see. What is 'there' before your conscious awareness. What I think is given may be utterly different.
Still, I think we might agree. I say that perceiving a hand is sufficient to end a regress of sceptical questions. You say that the ostensive definition 'this is a hand' is sufficient. I am not sure the two views are really different. — PossibleAaran
It could be dubitable. But first, you have to give me an example of what it means to doubt such a statement. Apparently, it should mean that there are indubitable statements. But what would be the definition of an indubitable statement? — Magnus Anderson
Suppose that a person is overcome with a severe illness causing delusion, and hallucinations, with the appearance of all sorts of phantasms, paranoia and suspicion of everyone and everything. This person would be completely unsure of what was real. Wouldn't this person doubt everything and know nothing? — Metaphysician Undercover
Why would you say that doubting the meaning of something is not a sensible form of doubt? — Metaphysician Undercover
I'm interested in the first one. That seems to me to be what the thread is about. — Banno
So do we agree that it's got nothing to do with the main topic, which is belief as a propositional attitude? — Banno
You are one describing this -- not the person you are referring to. How would he know he is hallucinating? — Caldwell
Do you doubt that twice two is four? Could you? — Banno
And if you came across someone who could, what would you make of them? — Banno
But, holding the meaning of the symbols fixed, I cannot imagine that 2+2 is not 4. — PossibleAaran
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