The more critical points of failure, the more likely the system will crash.
For an idea, look at Puerto Rico's problems with distributing incoming aid. Computers are down, records inaccessible, power is out. Thousands of cargo containers in port with no distribution, comms are down with cell towers, so they can't call to see who could receive freight even if they had the fuel to get it there (and the drivers).
Every chain has weaker links, no culture or society is immune.