The concept of entropy plays a crucial role in understanding the universe from "summary" of Reality Is Not What It Seems by Carlo Rovelli
Entropy is a fundamental concept that underlies the workings of the universe. It is a measure of the disorder or randomness in a system, reflecting the amount of energy that is no longer available to do work. As systems evolve over time, they tend to move towards states of higher entropy, where the energy is more evenly distributed and less able to be used for useful work. This principle is known as the second law of thermodynamics, which states that in any isolated system, the total entropy will always increase over time. The concept of entropy is closely related to the arrow of time, as it provides a directionality to the universe's evolution. As systems move towards higher entropy states, they become less organized and more chaotic, leading to the passage of time as we experience it. This concept helps us understand why events are irreversible and...
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