rational, ethical & metaphysical challenges to the sacred texts / 3 levels of thought - literal, rational, transcendental / burden carriers vs essence seekers /the folly of uniformitarianism / 3 challenges to miracles / just because something happens routinely doesn't make it any less extraordinary / the mathematical complexity of digestion / rationality is a call for open-mindedness / sci-fi - why is attraction to the supernatural so natural? / what we call reality depends on the scale of our perception / celestial perspective vs human perspective / how we devalue scripture & how we devalue science / humility facilitates open-mindedness