What does an obscure 1950s cult whose members believed a UFO was on its way to rescue them from an Earth-destroying flood have in common with Iowa caucusgoers? A lot, actually. The cult made for a landmark case study in how strongly people can cling to their beliefs despite overwhelming evidence to the contrary. And that truth is important to acknowledge in any effort to persuade individuals to change their minds, as caucusgoers will be undertaking en masse Monday night.