iwwr·6 เดือนที่ผ่านมา·discussAFAIK continuously welded tracks (like those used in high speed rail) are also slightly tensioned, so a break in a single point could make it look like a whole section of track is missing, as tension is released.
iwwr·12 เดือนที่ผ่านมา·discussEach step in that chain is harder to do and more computationally expensive.