Physics and its development is not the sole, nor the primary, reference for man's means and acquisition of knowledge. Ohm's Law is valid within certain limits,

Physics and its development is not the sole, nor the primary, reference for man's means and acquisition of knowledge. Ohm's Law is valid within certain limits, and these limits are also facts. (I misstated something earlier -- Ohm's Law itself is not a fact, it is conceptual framework, an identification of facts.) Just as our understanding of blood groups and their compatibility has improved over time -- the underlying facts did not change, the knowledge and theories changed to take into account the expanded knowledge of facts. Science is a systematic body of knowledge, that is: knowledge of nature -- nature being the facts.