This automatic faucet that need the hands to be between the wall and the water to turn on. - eviltoast
  • Grimy@lemmy.world
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    7 months ago

    five 9’s or two nines or maybe even one nine. maybe one nine.

    This is the first time I hear this expression, what does it mean?

    • dhork@lemmy.world
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      7 months ago

      “Five Nines” typically refers to something that works 99.999% of the time, which still allows for 1 screw-up out of 100,000.

    • HubertManne@kbin.social
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      7 months ago

      yes as dhork mentions its related to a concept of 6sigma which is an airline/telephony thing about things that must not fail. My little quip is suggesting they work like 90% of the time which is not great.

      • meowMix2525@lemm.ee
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        7 months ago

        Finally learned what DFSS actually means rather than just a breakdown pf the fucking acronym lol