 According to  David Hume,  the impossible cannot be conceived.  Moritz Schlick  claimed that the logically impossible, such as an explicit inconsistency, is simply unthinkable. Yet  Hegel  complained that it is “one of the fundamental prejudices of logic as hitherto understood” that “the contradictory cannot be imagined or thought” (Hegel 1931: 430). On this approach, our representational capabilities are not limited to the possible: we are able to conceive, describe, and sometimes even believe, impossibilities.