Before revision: From this viewpoint, the measurement process is regarded as a process where the correlation (mutual information) between the engine and the demon increases, decreasing the entropy of the system in a amount given by the mutal information.
After revision: From this viewpoint, the meansurement process is regarded as a process where the correlation (mutual information) between the engine and the demon increases, decreasing the entropy of the system in a amount given by the mutal information.