Users are a terrible thing. Systems would be much better off with no users.
Obviously, I’m being somewhat tongue-in-cheek. Although users do present numerous risks to stability, they’re also the reason our systems exist. Yet the human users of a system have a knack for creative destruction. When your system is teetering on the brink of disaster like a car on a cliff in a movie, some user will be the seagull that lands on the hood. Down she goes! Human users have a gift for doing exactly the worst possible thing at the worst possible time.
Worse yet, other systems that call ours march remorselessly forward like an army of Terminators, utterly unsympathetic about how close we are to crashing.
As traffic grows, it will eventually ...