This is a similar story. When ATMs were introduced in Canada in the 70s/80s, it was common to believe they were infallible. When customers claimed they were sh

This is a similar story. When ATMs were introduced in Canada in the 70s/80s, it was common to believe they were infallible. When customers claimed they were short-changed by machines, often they were prosecuted for fraud or attempted theft. I'm sure HNers can think of dozens of ways a machine could be wrong ... https://en.wikipedia.org/wiki/Automated_teller_machine https://en.wikipedia.org/wiki/Automated_teller_machine Also, regarding the Postmaster article, note that somebody working on that project would likely face great difficulty in convincing anybody there was a systems problem.