• SuckMyWang@lemmy.world
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      4 months ago

      That would make it -2

      I think it’s more likely that the one person there just died

    • teft@lemmy.world
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      4 months ago

      When the person and anti-person are annihilated is there a release of photons? Or is the energy release more intense?

      • Coskii@lemmy.blahaj.zone
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        4 months ago

        I believe (what with not being an expert at all) that the energy release upon annihilation is directly related to how positive or negative the person is.

        • TAYRN@lemmy.world
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          4 months ago

          So would my cynical, pessimistic ass just expel rainbows and happiness if I touched Nega-me?

          • veroxii@aussie.zone
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            4 months ago

            I have bad news. You are the nega-you. The real positive you is out there somewhere in a Library.

            • TAYRN@lemmy.world
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              4 months ago

              In a library? The real me sounds like a nerd. Probably reading some Terry Pratchett or something lame like that.

              Glad I’m the super cool nega-me, who doesn’t read books AND probably rides a motorcycle and stuff.

  • VindictiveJudge@lemmy.world
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    4 months ago

    My guess: a count increments upward when the entrance door swings open and downward when the exit door swings. If one person holds the door for a few people but they exit individually, the count gets messed up.

    • BannanableOP
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      4 months ago

      You have to scan your student card on entrance and exit but I think it gets messed up if someone gets put through by the desk staff without scanning.

    • fidodo@lemmy.world
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      4 months ago

      I’m guessing it’s an error state. Reporting an impossible number is better than reporting an incorrect number.

    • FooBarrington@lemmy.world
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      4 months ago

      People counting is annoyingly hard.

      You can’t go by doors opening or light barriers because of the issue you mentioned.

      Using e.g. cameras mounted on the ceiling kinda works, as long as you have a small area to cover, but they use a lot of processing power and are still not accurate.

      Going by CO2 counts or VOCs is possible, but lags behind and has to be calibrated per room (and is still inaccurate without good ventilation).

      I wish there was an easy solution, especially for smart homes.

        • FooBarrington@lemmy.world
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          4 months ago

          Because that would allow me to do a bunch of automations like automatically turning off lights when leaving the room, or transferring music between speakers so it follows you. I’ve actually implemented both of these, but you have to carry around a Bluetooth beacon, and it’s not fast enough to be fully seamless.

  • SlimeKnight@lemm.ee
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    4 months ago

    That is a good set up for a horror story.

    ”Two guys entered the haunted library. Three came back”

  • _stranger_@lemmy.world
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    4 months ago

    21.25 extra people have left the library. There’s 3/4th of a person lurking somewhere among the stacks.