  The Landauer-Penrose-Bennett resolution depends for its consistency in continuing to take into account a probability distribution over the possible outcomes of the measurement, after the measurement has occurred. There are many reasons why one might feel that this raises problems. For example, a Boltzmannian approach to statistical mechanics takes the entropy of a system to depend only upon a confined region of the microstate space, usually either that of microstates compatible with a given macrostate, or accessible to the microstate over time. Probability distributions over inaccessible or macroscopically distinct regions should not, from this point of view, have thermodynamic significance. From an opposite point of view, a subjective Bayesian might argue probability distributions are only expressions of an agent's uncertainty. If the intelligent demon is supposed to be the agent, it can hardly be uncertain of its own state once it has performed the measurement.