Skepticism Of Skepticism

When, in the Meditations, Descartes considers that he might be being deceived, the irony is that he is a fictional character, in a fictional situation, concocted by the real Descartes, who is actually at a desk, writing the account.  Furthermore, the real Descartes is attempting to execute a Method, one traditionally characterized as Skepticism.  Now, in the actual world, the criterion for a Method is not whether or not it is certainly occurring whenever one seems to be executing it.  Rather, it is whether or not it is effective in what it is being employed to accomplish.  Thus, accordingly, Skepticism about Skepticism concerns whether or not it accomplishes its goal, e. g. establishing resistance to some Dogmatism.  So, within the fiction, 'Descartes' might not be able to deny that he is 'Doubting' at the same time that he is 'Doubting', but this attempted 'Doubting' of 'Doubting' falsifies what constitutes actual Skepticism of Skepticism.  Now, despite their prominence in the history of Philosophy, Cartesian Cogito and Sum have not stood up well to scrutiny, e. g. they entail no identity over time.  But, Descartes' method itself has rarely been challenged.  Hence, generally overlooked has been its failure in its stated purpose--to establish an Existence that is Certain.  Yet, those varied criticisms of the Existents that are the purported achievements of the method thus entail criticism of the method itself.  But perhaps the more conclusive basis for Skepticism of Descartes' Skepticism is that the latter is ultimately only a circular procedure--arriving at an I and its Thinking that are entailed in the method from the outset.