Shows a three-level postulate hierarchy. Level 1 postulates are built entirely on accepted axioms and self-evident observations. When the supporting axioms are not 100% accepted, or the observations are not universally self-evident, the Level 1 postulate is less than 100% reliable. A Level 1 postulate that is not 100% reliable decreases all upper level postulates built upon it. The reliability of each upper level postulate is the product of the reliability of all lesser postulates that support it.
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