There was also the result of drawing a sharp line between the in-group and everyone else. If we have strict dietary laws but the people on the other side of the hill don’t share them, then it follows that they’re unspeakable barbarians, and that we should not trade or cooperate with them, let alone intermarry, and indeed, it’s acceptable to kill them and take their stuff, as surely such a barbarous people would do the same to us.










Police have UPS-like devices which splice into existing mains cables to keep machines alive on the way into the forensics lab. Presumably it’s standard practice to use those.
Of course, the server could be configured to wipe itself if it loses connectivity for more than a few seconds, or its routing changes. The police would need devices that route Ethernet traffic over 5G, though those would presumably be detectable as bandwidth goes down and latency goes up.