Comment on This automatic faucet that need the hands to be between the wall and the water to turn on.

HubertManne@kbin.social ⁨6⁩ ⁨months⁩ ago

• Grimy@lemmy.world ⁨6⁩ ⁨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?

  source

  • dhork@lemmy.world ⁨6⁩ ⁨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.

    source

    • bolexforsoup@lemmy.blahaj.zone ⁨6⁩ ⁨months⁩ ago

      Huh truly a TIL. Never heard this in my life.

      source

      • shalafi@lemmy.world ⁨6⁩ ⁨months⁩ ago

        I learned it working telecom. For example, if you wish to offer 911 service, your service has to be operational 99.999% of the time.

        It’s more casually used to mean a service or operation is insanely reliable.

        source

        • -> View More Comments
  • HubertManne@kbin.social ⁨6⁩ ⁨months⁩ ago

    yes ad 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.

    source

    • meowMix2525@lemm.ee ⁨6⁩ ⁨months⁩ ago

      Finally learned what DFSS actually means lol

      source
  • quindraco@lemm.ee ⁨6⁩ ⁨months⁩ ago

    It means HubertManne had a stroke while typing.

    source