I've been following this discussion with interest and have decided to copy part of an article on the brain's need for reasons, even to the extent of making them up if none are obvious.
It isn't completely relevant, but I think it helps explain the number of different beliefs concerning something that is unknowable.
Are our beliefs simply a matter of genetics?
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"But this drive to come up with the causes of events is
hardly limited to therapy patients. Neurophysiologists
discovered the same phenomenon in a radically different
context. While mapping the brain, they were amazed to find
that when the area responsible for an emotion was
electronically stimulated, subjects experienced the
mechanically induced feeling, then instantly came up with
reasons for their responses.
If you activate the area of the brain that generates
laughter, for example, the subject may happily "explain"
that his hilarity stems from an overly earnest looking
doctor or an odd diagram on the wall.
Neurologists also happened upon the mind's tendency to
concoct explanations for puzzling events. In rare instances
when the left and right sides of the brain become
disconnected, the verbal left half seamlessly fabricates
stories to explain actions initiated by the right half.
Apparently, the mind abhors an explanatory vacuum and
rushes in to fill the void, with no compunction about
creating "reasons" out of whole cloth.
Here is the link for the entire article:
http://www.nytimes.com/2002/12/17/science/17BEHA.html?ex=1042429405&ei=1&en=5042e9ddba218bee