 The two dreaming doubts are parasitic on the same Similarity Thesis, though their sceptical consequences differ. The Now Dreaming Doubt raises the universal possibility of delusion: for any one of my sensory experiences, it is possible (for all I know) that the experience is delusive. The Always Dreaming Doubt raises the possibility of universal delusion: it is possible (for all I know) that all my sensory experiences are delusions (say, from a God’s-eye perspective).