There is one more ‘ism’ which deserves mention, though it is a more informal ‘ism’ than those discussed in the main text. Illusionism is the view that (phenomenal) consciousness is an introspective illusion – that when we introspect about conscious states we misrepresent them as having phenomenal properties – qualia – that in fact they do not have. On one reading, which I disagree with, illusionism says that conscious states do not really exist. On another, which I am more sympathetic to, illusionism says that conscious experiences exist but are not what we think they are. It is possible,
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