[amsha]

Security and fault-tolerance are cost centers, so unless they are explicit features of a deliverable they will be ignored. Planes, cars, and banks all have anomaly detection and auditing because people demand it. They understand the risks of failure. Conversely, very few people are demanding remote loopback facilities for IP. That's not a criticism of fault-tolerance, but if it's important then we should communicate more effectively. Why is fault-tolerance important? What goes wrong without it? What catastrophes could have been averted if we had considered it?

Edit for clarity