i think it just between the brain.
i would like to compare it with the following.
when you are completely fine but start to think that your knee is hurting but it isnt but you start thinking about it very strong soon enough your knee will hurt.
so very early years back someone saw a weird creature or a misformed man and he tought its a God. but it wasnt just a wrong created manlike thing. but he (or she) starts to think of it real hard and told it to others. and soon enough there were believers.
but like i said before, i think that this is a never ending discussion, same discussion as "are there aliens", "wich was 1st egg or chicken", "is a falling tree supposed to make sound when there is no man who can hear it?" etc.
life isn't complicated, just face it simple.
