Exorcising Maxwell's Demon
Version 1.0.0 · Updated 2026-07-30
CORE DEFINITION
The physics community was puzzled for a long time: Maxwell's demon seemed to reduce entropy without expending energy. Later, Szilard and Landauer proved that the demon must consume energy and produce heat when 'measuring' molecular velocities and 'forgetting' information. This saved the second law of thermodynamics.
SCAFFOLDING EFFECT
Reduce cognitive load
The physical cost of information. Any screening, management, or decision-making mechanism (demon) that claims 'zero cost' is a fraud. Making judgments (measurement) and clearing caches (forgetting) require significant energy. If managers (demons) are not paid high salaries (energy), the system will increase entropy and descend into chaos. 120. Wheeler's Delayed Choice Field: Quantum Mechanics
Anchor fast decisions
It refers to using information theory to 'exorcise' the Maxwell's demon paradox—proving that the demon must obtain information to sort molecules, and erasing information generates entropy increase, so total entropy does not decrease, thus reconciling with the second law.
MINIMUM ACTION
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