@hue-man,
What is existence? Is it physical reality alone? Then does the mind exist other than as a function of the brain? Does the soul exist other than the character and values exhibited by a person? Does love exist, or freedom, other than as passing ideas pondered by the brain? Are all intangible entities mere phantoms contingent upon the physical? Is matter and energy adequate to explain human existence, existence as a whole? Matter is substantial, it has mass and occupies space, but it is made of energy that is insubstantial, has no mass, and does not occupy space. At what point does energy, as it becomes matter, also become substantial, massive, and extensive in space?
Samm