|People can be mistaken about experiences|
People can, and often do, form radically mistaken beliefs about their conscious experiences—eg victims of blindness denial claim they can see although they are blind. So the possibility of fading qualia (option 2) shouldn't be rejected.
Argument anticipated by David Chalmers (1996).
Chalmers, David. 1996. The Conscious Mind. New York: Oxford University Press.
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