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The information-theoretic arguments presented in a recent publication on"Quantum discord and Maxwell's demons" are discussed, and found not to addressthe problem specified by Maxwell. Two interrelated and definitive exorcisms ofthe demon, one purely thermodynamic, and the other quantum-thermodynamic arebriefly discussed. For each of the two exorcisms, the demon is shown to beincapable to accomplish his assignment neither because of limitations arisingfrom information-theoretic tools at his disposal, nor because of the value ofhis IQ. The limitations are due to the physics of the state of the system onwhich he is asked to perform his demonic acts.

On the lack of relation between physics and "Quantum discord and Maxwell's demons"