Perception of a technology's reliability

I often think about Evan Hahn’s article “ 95% is very different from 99% ”. He classifies it as “a rant”, but I think he really hit on something. He says: I think there’s a huge difference between “usually works” and “almost always works”. One of his examples is a phone’s autocorrect, saying: My phone’s autocorrect, though essential and impressive, fails all the time. I’d like to dig further into…