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The Hard Problem of Extraphysics addresses the challenge of defining, detecting, and validating realities or laws that exist beyond physical spacetime while still making coherent, non-arbitrary claims about them. It asks how extraphysical entities can have causal influence without violating known physics, how they can be studied without instruments, and how meaningful predictions can be made. The problem highlights the tension between explanatory ambition and empirical limits, questioning whether extraphysics is fundamentally unknowable or merely awaiting new conceptual and methodological breakthroughs.
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