And this indistinction is not simply a logical inference, it is genuinely inscribed at this precise moment of the meditation; it has its immediate effect on the subject who is meditating; it makes him abandon, or almost, the certainty that he possessed up until that point, that as a meditating and speaking subject, he was awake; it genuinely places him inside the possibility that he is actually asleep: 'I am quite astonished by this, and my astonishment is such that it is nearly sufficient to convince me that I am asleep'.