no operation copies an unknown quantum state. linearity forbids it (Wootters–Zurek, Dieks 1982); optimal approximate cloning is capped at fidelity 5/6, and the bound is what stops entanglement from being used to signal faster than light
classical information has no such protection, and content addressing makes copying free: a particle is its own hash, so anyone can republish it perfectly
this is why cyber must buy what physics gets for nothing. a copied cyberlink produces the same focus shift as the original, so the Shapley value alone would split their credit evenly. the per-contribution surprise gate — Bayesian Truth Serum — restores the asymmetry: the copy enters the mint weightless. the honesty layer of the reward is an economic prosthesis for a theorem the classical world does not have
see Bell inequality · rewards · physical analogies
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