Series: The Physics of the Undo - Part 3 (Building Universes from Code) If we were to record every single change in a complex digital universe, we would eventually run out of space. Even in a machine with gigabytes of memory, the "History Stack" is not infinite. We are forced to decide: How much of the past is worth saving? This brings us to the quiet engineering of State Management. We use snapshots, deltas, and circular buffers to manage the weight of history. We create a h