The cogito ought to be reversed. Because I become aware that I am thinking and so, that my reality is thought, I can no longer take the 'I' in the way that it has been understood up to that moment, as say the 'thinker', as this familiar self etc., it is no longer even certain that the word, or verbal gesture that has been in use to designate self, has any meaning at all. And in the same way the 'am', the meaning of being that has been assumed, no longer refers to anything except its identity as a gesture. and 'thought' too, how many unquestioned assumptions are in play in that too? So, the cogito goes from latent certainty to radical doubt and not the other way around - the traditional direction being a deliberate and shallow misunderstanding to evade what is actually revealed.