This is a philosophical point which will not have escaped professional pilots and design staff, but I make no apology for spelling it out in its full simplicity.
Many thousands of highly educated aerospace engineers have put immense amounts of effort into making the aircraft multiply redundant and failure-tolerant so that any one failure or set of failures can be survived.
Yet a single component failure in an engine caused such a massive event that the multiple systems in the aircraft were disabled to an extent that came very close to disaster and it took very skilful and highly discilplined management to salvage the situation.
Alternatively, one could argue that the design team did an exceptional job and built in enough redundancy to make a catastrophic engine failure survivable.
Kudos to all I say. Pilots, CC, ATC, Airbus etc.
