The Three Clocks Brain, Machine, and Cosmos

This academic paper introduces the concept of time density, defined as the number of irreversible actualizations occurring within a specific volume of space-time. The author proposes a unified structural law that explains temporal flow across three distinct substrates: the human brain, artificial intelligence, and the expanding universe. In the neural limit, declining metabolism reduces encoding density, explaining why time seems to accelerate with age. Conversely, computational systems increase this density through high processing rates, while the cosmological limit sees density fall as the universe expands. By anchoring these processes in Landauer’s principle and Planck units, the research links subjective experience to fundamental physics. Ultimately, the work suggests that the arrow of time is a substrate-independent measure of information accumulation.