In this specific, modern context, it's the study of the fundamental assumptions, interpretations, and unsolved conceptual puzzles within physics itself. It's not the ancient philosophical field of "metaphysics" (the study of being), but a pragmatic examination of physics' own foundations. It asks: What does quantum mechanics actually tell us about reality? What is the nature of space and time? How do we interpret the mathematical formalism? It’s the troubleshooting manual for when the math works perfectly but the story it tells seems insane.
Example: The endless debates over the Copenhagen Interpretation vs. the Many-Worlds Interpretation of quantum mechanics are Metaphysics (Physics of Physics). The equations predict outcomes identically; the fight is over what the math means for the nature of reality—a question physics itself, as a tool, is unequipped to answer.
by Dumu The Void February 4, 2026
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