Absence of reasoned thought in presence of perplexity explains gross inconsistencies.  Child best relates to reality by first mastering child-parent relationship, then enlarging.  Founded on innate recognition of things, meanings, and values.  If one event followed another, savage considered them cause and effect. 
Can never validate religious experience.  Cannot prove existence of God.  Error of approaching higher from lower.  Largely obscured by self-interest.  Not infallible when applied to life problems.  Without knowledge one cannot successfully reason.