17 There is one further consideration, which leads perhaps to the most intriguing conjecture of all. Let us put two tokens on a graph and let them take random walks, as before; but now suppose the schedule demon is clairvoyant|that is, he can see where each token will go, innnitely far into the future. The question is, with this advantage, can he now keep the tokens apart forever ? Of course we...

Dwa pamflety, mające w tytule demonizm – JKB-Demon Karola Irzykowskiego i Leon Chwistek Demon Intelektu Stanisława Ignacego Witkiewicza należą do ważnych polemik dwudziestolecia, a wśród nich: ambitnych przedsięwzięć poznawczych. Studium relacjonuje trybie porównawczym zmagania z przygniatającymi autokreacjami Juliusza Kadena-Bandrowskiego Leona Chwistka. Nieprzeniknione cechy osobowości tych o...

We present an analysis of Szilard's one-molecule Maxwell's demon, including a detailed entropy accounting, that suggests a general theory of the entropy cost of information. It is shown that the entropy of the demon increases during the expansion step, due to the decoupling of the molecule from the measurement information. It is also shown that there is an entropy symmetry between the measureme...

Cezary W. Domański, Demon aktywizmu. Mieczysław Choynowski prekursor polskiej psychometrii, ed. by Maryla Goszczyńska, in co-operation with Ewa Goryńska and Elżbieta Strojna, Wydawnictwo Naukowe Scholar, Warszawa 2022, 347 pp.

Maxwell’s ”finite being” was born in 1867, as one ”who knows the paths and velocities of all the molecules” ([7], p.213), and who, unlike us, is ”clever enough” ([7], p.213), and can violate the second law of thermodynamics. It was baptized as a demon by Lord Kelvin ([7], p. 214), and ever since has fueled the discussions in the foundations of statistical mechanics. Since its inception, and con...