The left hemisphere experiences the whatness of things. It thus measures and evaluates quantitatively. The right hemisphere experiences the howness of things. It thus measures and evaluates qualitatively.
The confusion between the what and the how gives rise to so many errors in explanation although not so much errors in experience.
The distinction between the brain and the mind is something the right hemisphere can grasp more easily than the left because the distinction between the brain and the mind is not one that readily resides in the what of the thing but in the how. The brain and mind occupy the same whatness but operate in different hownesses. All living things have whats and hows. The brain/mind is special because the howness is so basic to the functioning of the what that it doesn't make sense to speak of them as distinct matters, as would be more reasonable were were talking about the pancreas, for example.
When a society moves from scarcity to abundance it moves from experiencing the material world as whats into experiencing the material world as hows.
God is important not as a what but as a how. That is why God and the non-material are more easily understood by the right hemisphere and not so easily understood by the left.