computational irreversibility

Computational irreversibility refers to situations where, after a process has occurred, it's impossible to uniquely reverse it and determine the original input from the output alone. In other words, some processes lose information as they proceed, making it impossible to reconstruct the starting point solely based on what we observe afterward. This concept is important in areas like computation and thermodynamics, where certain transformations naturally lead to a loss of detail, emphasizing that not all processes can be perfectly reversed or retraced.