I am reminded of the (perhaps apocryphal) response of Mizuho Securities regarding whether they would fire the operator who sold 600k shares for 1 yen instead of 1 share for 600k yen: "Why would I fire someone who I had just spent [~$300 million] training to be careful?"https://twitter.com/datachick/status/952609286584025088 …
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(A thing that I genuinely like about engineering culture over here, heavily influenced by a certain automobile manufacturer near Nagoya, is that "andon cords" and virtual equivalents are widely, widely deployed. https://en.wikipedia.org/wiki/Andon_(manufacturing) … )
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(It's, conceptually, a big red button which causes an expensive remediation. The important part is not the cord/button, it is the organizational expectation that, if you suspect a quality issue, you are *responsible* for pushing button and your concern *will* be addressed.)
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Anyhow: operator error is a thing; properly engineered applications and processes assume that operators will occasionally make mistakes and should be designed to be robust against them.
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End of conversation
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