In addition to noting the specific conditions of skepticism that occurred during the reformation era which was concerned about the gaps between word and image, Spolsky notes that the mind itself creates a space for skepticism because it brings together multiple and occasionally even contradictory forms of knowledge.
Because the sense input offered to the brain, even from multiple sources, is woefully incomplete, the mind must join the evidence together in what seems the most sensible manner and then make "leaps of faith" in places where the evidence is incomplete or contradictory [REF].