Much ado has been made about whether dreaming arguments are self-refuting. According to an influential objection, similarity theses presuppose that we can reliably distinguish dreams and waking – we need first to distinguish them, in order to compare them; yet the conclusion of dreaming arguments entails that we cannot reliably distinguish. Therefore, if the conclusion of such an argument is true, then the premise invoking the Similarity Thesis cannot be. Some formulations of dreaming arguments