This is how we know we're sick. There are many kinds of mental and physical sicknesses. There are three types of human being: those who see, those who see when they are shown, and those who do not see. This is basic logic pertaining to observation (the ability to see). Some cannot see me until they are shown, some cannot see me, and some can see. We have categorized three groups of people according to the logic of a description. Science governs who and what we are. It is who and what we are. God would be what lies beyond phenomenon (sensible perception). He would be the noumenon.