However, our experiences can never encompass all that exists, all that is actual or real whether or not it is observable, accessible, or understandable to us. In this broadest sense, our methods of analysis cannot reveal all of reality to us.
Does matter comprise, at the quantum level, vibrating strings of energy? On the basis of mathematical formulations, theoretical physicists postulate that it does. Yet we cannot know as a certainty that this conceptualization is accurate unless and until experimental verification is devised. However, there is much more basis for belief that reality includes vibrating quantum strings than that the God of the Bible or any deity is a reality outside the idea of such. That is, ideas exist, but it does not necessarily follow that the thing proposed has any real existence beyond the concept. God or deities rank as highly improbable as explanations for the universe, for life on planet earth, or for events in our physical world.
"A fact or factual entity is a phenomenon that is perceived as an elemental principle."[w] Thus, a fact is not subject to personal interpretation, rather it an observed phenomenon in the natural world. On the other hand, definitions of 'truth' vary. For the purposes of this site, truth will be regarded as corresponding to fact and reality.