It is of first-rate importance to notice from the start that stupidity is not the same thing, or the same sort of thing, as ignorance. There is no incompatibility between being well-informed and being silly, and a person who has a good nose for arguments or jokes may have a bad head for facts.
Gilbert RyleWhen two terms belong to the same category, it is proper to construct conjunctive propositions embodying them. Thus a purchaser may say that he bought a left-hand glove and a right- hand glove, but not that he bought a left-hand glove, a right- hand glove, and a pair of gloves. 'She came home in a flood of tears and a sedan-chair' is a well known joke based on the absurdity of conjoining terms of different types. Now the dogma of the Ghost in the Machine does just this. It maintains that there exist both bodies and minds.
Gilbert Ryle