Cartesian skepticism
Appearance
Cartesian skepticism advocates a persistent awareness of one's own capability to be deceived. Some have claimed that the corresponding philosophical proposition fails the criterion of falsifiability that is required of any empirical theory.[citation needed]. In the "Dictionary of Philosophy of Mind", Cartesian skepticism is defined as "Any of a class of skeptical views against empirical knowledge based on the claim that claims to empirical knowledge are defeated by the possibility that we might be deceived insofar as we might be, for example, dreaming, hallucinating, deceived by demons, or brains in vats."