The Second Law of Thermodynamics can be understood through the concept of entropy, which reflects how disorder and randomness occur within a system. Essentially, this law states that in any spontaneous process, the overall entropy of that system tends to rise over time.

This increase in entropy signifies a natural tendency towards greater disorder, indicating that systems will move from order to chaos without external intervention. Thus, the Second Law highlights a fundamental characteristic of physical processes in the universe, as described by Walter Isaacson in "Einstein: His Life and Universe."