Doubting Doubt

At every stage of the application of his method, Descartes' reasoning is 'I can imagine that the situation is other than it appears to be.  Therefore, I can doubt it.'.  Likewise, if an appearance is possibly false, it is because some alternative is possibly true.  Similarly, volitional liberation from the given is entailed in the creative replacement of it.  Thus, while his concept of 'Doubt' may be 'clear', it is not 'distinct', i. e. its object in each of his examples is not atomic, but only a facet of a more comprehensive process.  In other words, according to his own criterion, his concept of 'Doubt' is dubious.