The most constant threat to a Worldview carefully constructed of “revealed” truths is reason. In a reasoned world, the idea of truth is dynamic. It hasn’t been revealed once and for all, and so opening the doors to new ideas and concepts is part of every day life. Reason distrusts revelation in the same measure as it is distrusted by revelation. It “relies on observation, reflection, critical thinking, and testing by experimentation, and it builds on what is learned in this way from generation to generation to expand knowledge and understanding.” Ideas based in reason don’t shy away from the demand for proof; either they have it or they find it. And if ideas can’t be proven, they are set aside without threat of destabilizing the whole worldview.