A long-running system must have the ability to filter out noise.
BitTorrent does not react violently to every network fluctuation or node anomaly.
Instead, it allows a large number of minor failures to occur naturally and only adjusts the overall state when necessary.
This tolerance for noise prevents the system from being swayed by short-term anomalies.
When the system only responds to truly important signals, its operational trajectory becomes smoother.
The stability of BitTorrent is built on this long-term noise filtering mechanism.
