The arrow of time is a fundamental aspect of physics from "summary" of Reality Is Not What It Seems by Carlo Rovelli
The arrow of time is a fundamental aspect of physics. It is a concept that has puzzled scientists and philosophers for centuries. The idea that time only moves in one direction, from past to future, is deeply ingrained in our understanding of the universe. This concept is closely related to the second law of thermodynamics, which states that the entropy of a closed system tends to increase over time. Entropy is a measure of disorder or randomness in a system. As time moves forward, entropy increases, leading to a more disordered and chaotic state. This asymmetry in time is what gives rise to the arrow of time. It is what allows us to distinguish between past and future, caus...
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