The Memory in Lakes and Hard DrivesWhy some systems have a point of no return.

A single principle explains why a polluted lake can suddenly flip to a murky state and why a hard drive can store data. This phenomenon, known as hysteresis, describes systems with two stable states that resist switching back once a threshold is crossed. This insight reveals a hidden connection between ecology and technology, showing how tipping points and data storage operate on the same fundamental logic of history-dependent memory.

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